\begin{table}%t2
\caption{\label{t:etocho-g}Transitions of the \textit{gauche}-conformer of ethyl formate observed with the IRAM 30~m telescope toward Sgr~B2(N). The horizontal lines mark discontinuities in the observed frequency coverage. Only the transitions associated with a modeled line stronger than 20~mK are listed.}
%\centering
\small
 \begin{tabular}{rlrrrrrl}
 \hline\hline
 \multicolumn{1}{c}{$N^a$} & \multicolumn{1}{c}{Transition$^b$} & \multicolumn{1}{c}{Frequency} & \multicolumn{1}{c}{Unc.$^c$} & \multicolumn{1}{c}{$E_{\rm l}$$^d$} & \multicolumn{1}{c}{$S\mu^2$} &  \multicolumn{1}{c}{$\sigma^e$} &  \multicolumn{1}{c}{Comments} \\ 
  & & \multicolumn{1}{c}{\scriptsize (MHz)} & \multicolumn{1}{c}{\scriptsize (kHz)} & \multicolumn{1}{c}{\scriptsize (K)} & \multicolumn{1}{c}{\scriptsize (D$^2$)} &  \multicolumn{1}{c}{\scriptsize (mK)} &  \\ 
 \multicolumn{1}{c}{(1)} & \multicolumn{1}{c}{(2)} & \multicolumn{1}{c}{(3)} & \multicolumn{1}{c}{(4)} & \multicolumn{1}{c}{(5)} & \multicolumn{1}{c}{(6)} & \multicolumn{1}{c}{(7)} & \multicolumn{1}{c}{(8)} \\ 
 \hline
   1 & 14$_{ 7, 8}$--13$_{ 7, 7}$ &   99~252.267 &     9 &  140 &        43.9 &   19 & Blend with a(CH$_2$OH)$_2$ and C$_2$H$_5$CN \\ 
   2 & 14$_{ 7, 7}$--13$_{ 7, 6}$ &   99~252.460 &     9 &  140 &        43.9 &   19 & Blend with a(CH$_2$OH)$_2$ and C$_2$H$_5$CN \\ 
   3 & 16$_{ 1,16}$--15$_{ 1,15}$ &  104~834.473 &    10 &  132 &        66.3 &   25 & Blend with C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 and $U$-line \\ 
   4 & 16$_{ 0,16}$--15$_{ 0,15}$ &  104~848.839 &    10 &  132 &        66.3 &   25 & Blend with C$_2$H$_3$CN, $\varv_{11}$ = 1/$\varv_{15}$ = 1 \\ 
   5 & 15$_{ 9, 7}$--14$_{ 9, 6}$$^\star$ &  106~216.238 &     9 &  154 &        40.2 &   25 & Blend with C$_2$H$_3$CN, $\varv_{11}$ = 1/$\varv_{15}$ = 1 \\ 
   7 & 15$_{ 8, 8}$--14$_{ 8, 7}$$^\star$ &  106~286.532 &     9 &  149 &        44.9 &   25 & Blend with $U$-line \\ 
   9 & 15$_{ 7, 9}$--14$_{ 7, 8}$ &  106~400.093 &     9 &  144 &        49.1 &   25 & Blend with $U$-line \\ 
  10 & 15$_{ 7, 8}$--14$_{ 7, 7}$ &  106~400.593 &     9 &  144 &        49.1 &   25 & Blend with $U$-line \\ 
  11 & 15$_{ 2,13}$--14$_{ 2,12}$ &  107~933.484 &   100 &  131 &        60.9 &   46 & Blend with C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1, C$_3$H$_7$CN, and $U$-line \\ 
  12 & 15$_{ 4,11}$--14$_{ 4,10}$ &  108~497.732 &    10 &  134 &        58.3 &   20 & Blend with C$_2$H$_5$CN and $U$-line \\ 
  13 & 16$_{ 2,15}$--15$_{ 2,14}$ &  108~858.373 &     9 &  135 &        65.2 &   20 & Blend with $^{13}$CN in absorption, CH$_3$CH$_3$CO, $\varv_t$ = 1, and $U$-line \\ 
  14 & 16$_{ 1,15}$--15$_{ 1,14}$ &  109~206.256 &   100 &  135 &        65.3 &   29 & Blend with C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 and $U$-line \\ 
  15 & 15$_{ 3,12}$--14$_{ 3,11}$ &  110~117.142 &    10 &  133 &        60.4 &   24 & Blend with $U$-lines \\ 
  16 & 17$_{ 1,17}$--16$_{ 1,16}$ &  111~255.183 &   100 &  137 &        70.5 &   35 & Blend with CH$_3$OH \\ 
  17 & 17$_{ 0,17}$--16$_{ 0,16}$ &  111~263.830 &   100 &  137 &        70.5 &   35 & Blend with C$_2$H$_3$CN, $\varv_{11}$ = 1/$\varv_{15}$ = 1 and $^{13}$CH$_3$CH$_2$CN \\ 
  18 & 16$_{ 3,14}$--15$_{ 3,13}$ &  112~186.512 &     8 &  137 &        64.2 &   42 & Blend with CH$_2$$^{13}$CHCN \\ 
  19 & 16$_{10, 6}$--15$_{10, 5}$$^\star$ &  113~276.855 &     9 &  165 &        40.8 &   28 & Blend with CH$_3$OCH$_3$ \\ 
  21 & 16$_{ 9, 8}$--15$_{ 9, 7}$$^\star$ &  113~332.031 &     9 &  159 &        45.8 &   28 & Blend with C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 and CH$_2$$^{13}$CHCN \\ 
  23 & 16$_{ 8, 9}$--15$_{ 8, 8}$$^\star$ &  113~419.845 &     9 &  154 &        50.2 &   28 & Blend with C$_2$H$_3$CN, $\varv_{11}$ = 1 \\ 
  25 & 46$_{10,37}$--46$_{ 9,38}$ &  113~560.008 &    23 &  488 &        62.8 &   28 & Strong CN in absorption \\ 
  26 & 16$_{ 7,10}$--15$_{ 7, 9}$ &  113~560.122 &     9 &  150 &        54.1 &   28 & Strong CN in absorption \\ 
  27 & 16$_{ 7, 9}$--15$_{ 7, 8}$ &  113~561.324 &     9 &  150 &        54.1 &   28 & Strong CN in absorption \\ 
  28 & 16$_{ 6,11}$--15$_{ 6,10}$ &  113~783.618 &     9 &  146 &        57.5 &   34 & Blend with $U$-line \\ 
  29 & 16$_{ 6,10}$--15$_{ 6, 9}$ &  113~810.530 &     9 &  146 &        57.5 &   34 & Blend with C$_2$H$_3$CN, $\varv_{15}$ = 1 \\ 
  30 & 16$_{ 4,13}$--15$_{ 4,12}$ &  113~866.411 &     9 &  139 &        62.7 &   34 & Blend with a-C$_2$H$_5$OCHO and $U$-line \\ 
  31 & 16$_{ 5,12}$--15$_{ 5,11}$ &  114~054.354 &     9 &  142 &        60.4 &   33 & Blend with C$_2$H$_3$CN, $\varv_{15}$ = 1  \\ 
  32 & 16$_{ 2,14}$--15$_{ 2,13}$ &  114~356.265 &   100 &  137 &        64.9 &   33 & Blend with CH$_3$CH$_3$CO and $U$-line \\ 
  33 & 16$_{ 5,11}$--15$_{ 5,10}$ &  114~420.852 &   100 &  142 &        60.4 &   37 & Blend with C$_2$H$_3$CN, $\varv_{11}$ = 1/$\varv_{15}$ = 1 \\ 
  34 & 42$_{ 6,36}$--42$_{ 5,37}$ &  115~318.413 &    41 &  411 &        44.6 &   60 & Strong CO \\   35 & 17$_{ 2,16}$--16$_{ 2,15}$ &  115~319.089 &     9 &  140 &        69.4 &   60 & Strong CO \\   36 & 17$_{ 1,16}$--16$_{ 1,15}$ &  115~551.954 &   100 &  140 &        69.4 &   60 & Blend with C$_2$H$_3$CN \\ 
\hline
%&&&&&&& \\[-8pt]
  37 & 22$_{ 1,21}$--21$_{ 2,20}$ &  147~415.492 &   100 &  171 &        37.3 &   31 & Blend with CH$_3$CH$_3$CO, $\varv_t$ = 1 and CH$_3$$^{13}$CN, $\varv_8$ = 1 \\ 
  38 &  9$_{ 7, 3}$-- 8$_{ 6, 2}$$^\star$ &  147~431.313 &    18 &  117 &        14.5 &   31 & Blend with C$_2$H$_5$OH and CH$_3$CN, $\varv_8$ = 1 \\ 
  40 &  9$_{ 7, 3}$-- 8$_{ 6, 3}$$^\star$ &  147~431.321 &    18 &  117 &         0.9 &   31 & Blend with C$_2$H$_5$OH and CH$_3$CN, $\varv_8$ = 1 \\ 
  42 & 22$_{ 2,21}$--21$_{ 2,20}$ &  147~454.440 &   100 &  171 &        90.3 &   31 & Blend with a(CH$_2$OH)$_2$, CH$_3$$^{13}$CN, $\varv_8$ = 1, and CH$_3$OCH$_3$ \\ 
  43 & 22$_{ 1,21}$--21$_{ 1,20}$ &  147~479.064 &   100 &  171 &        90.3 &   31 & Blend with CH$_3$CN, $\varv_8$ = 1 and $^{13}$CH$_3$CH$_2$CN \\ 
  44 & 22$_{ 2,21}$--21$_{ 1,20}$ &  147~517.966 &   100 &  171 &        37.3 &   31 & Blend with CH$_3$$^{13}$CN, $\varv_8$ = 1 and CH$_3$CN, $\varv_8$ = 1 \\ 
\hline
  45 & 10$_{ 7, 4}$-- 9$_{ 6, 3}$$^\star$ &  154~495.310 &    18 &  120 &        14.6 &  112 & Blend with C$_2$H$_5$CN \\ 
  47 & 10$_{ 7, 4}$-- 9$_{ 6, 4}$$^\star$ &  154~495.348 &    18 &  120 &         0.9 &  112 & Blend with C$_2$H$_5$CN \\ 
\hline
  49 & 23$_{ 9,15}$--22$_{ 9,14}$ &  163~354.580 &     7 &  205 &        81.5 &   38 & Group possibly detected, partial blend with c-C$_2$H$_4$O, uncertain  \\ 
 & & & & & & & baseline \\ 
  50 & 23$_{ 9,14}$--22$_{ 9,13}$ &  163~355.083 &     7 &  205 &        81.5 &   38 & Group possibly detected, partial blend with c-C$_2$H$_4$O, uncertain  \\ 
 & & & & & & & baseline \\ 
  51 & 23$_{ 3,20}$--22$_{ 3,19}$ &  163~550.748 &   100 &  184 &        93.0 &   38 & Blend with CH$_3$OCHO, $\varv_{{\rm t}}$ = 1 and CH$_2$CH$^{13}$CN \\ 
  52 & 23$_{ 8,16}$--22$_{ 8,15}$ &  163~648.730 &     7 &  199 &        84.6 &   38 & Blend with C$_3$H$_7$CN and NH$_2$$^{13}$CHO \\ 
  53 & 23$_{ 8,15}$--22$_{ 8,14}$ &  163~658.516 &     7 &  199 &        84.6 &   38 & Blend with C$_3$H$_7$CN, uncertain baseline \\ 
\hline
  54 & 24$_{ 5,19}$--23$_{ 5,18}$ &  176~014.876 &     9 &  196 &        96.4 &  365 & Blend with CH$_3$OCHO, CH$_2$CH$^{13}$CN, and HNCO, $\varv_5$ = 1 \\ 
\hline
%&&&&&&& \\[-8pt]
  55 & 19$_{ 6,14}$--18$_{ 5,13}$ &  202~061.374 &    15 &  160 &        13.8 &  138 & Blend with CH$_3$$^{13}$CN \\ 
  56 & 15$_{ 8, 8}$--14$_{ 7, 7}$$^\star$ &  202~643.074 &    17 &  144 &        17.5 &  108 & Blend with CH$_3$CN, $\varv_8$ = 1 and CH$_3$$^{13}$CN, $\varv_8$ = 1 \\ 
  58 & 15$_{ 8, 8}$--14$_{ 7, 8}$$^\star$ &  202~643.365 &    17 &  144 &         1.1 &  108 & Blend with CH$_3$CN, $\varv_8$ = 1 and CH$_3$$^{13}$CN, $\varv_8$ = 1 \\ 
  60 & 30$_{ 2,28}$--29$_{ 3,27}$ &  202~805.197 &     7 &  241 &        47.3 &  138 & Blend with C$_2$H$_5$CN and CH$_3$$^{13}$CN, $\varv_8$ = 1 \\ 
  61 & 30$_{ 3,28}$--29$_{ 3,27}$ &  202~824.924 &   100 &  241 &       122.7 &  138 & Strong CH$_3$CN, $\varv_8$ = 1 \\ 
  62 & 30$_{ 2,28}$--29$_{ 2,27}$ &  202~837.051 &   100 &  241 &       122.6 &  138 & Strong CH$_3$CN, $\varv_8$ = 1 \\ 
  63 & 45$_{ 9,37}$--44$_{10,34}$ &  202~856.742 &    41 &  463 &        10.5 &  138 & Blend with CH$_3$CN, $\varv_8$ = 1 \\ 
  64 & 30$_{ 3,28}$--29$_{ 2,27}$ &  202~856.967 &     7 &  241 &        47.3 &  138 & Blend with CH$_3$CN, $\varv_8$ = 1 \\ 
  65 & 65$_{ 8,58}$--65$_{ 7,59}$ &  202~857.921 &   214 &  828 &        52.8 &  138 & Blend with CH$_3$CN, $\varv_8$ = 1 \\ 
  66 & 17$_{ 7,11}$--16$_{ 6,10}$ &  203~524.096 &    16 &  151 &        15.9 &  161 & Blend with CH$_3$CN, $\varv_8$ = 2 \\ 
  67 & 17$_{ 7,10}$--16$_{ 6,10}$ &  203~528.806 &    16 &  151 &         1.1 &  161 & Blend with CH$_3$CN, $\varv_8$ = 2 \\ 
  68 & 17$_{ 7,11}$--16$_{ 6,11}$ &  203~574.259 &    16 &  151 &         1.1 &  161 & Blend with CH$_3$CN, $\varv_8$ = 2 \\ 
  69 & 17$_{ 7,10}$--16$_{ 6,11}$ &  203~578.970 &    16 &  151 &        15.9 &  161 & Blend with CH$_3$CN, $\varv_8$ = 2 and C$_2$H$_5$CN, $\varv_{20}$ = 1 \\ 
  70 & 29$_{ 5,25}$--28$_{ 5,24}$ &  204~412.101 &     7 &  240 &       116.8 &  316 & Blend with $^{13}$CH$_3$CH$_2$CN and $U$-lines \\ 
  71 & 19$_{ 6,14}$--18$_{ 5,14}$ &  204~417.969 &    16 &  160 &         1.2 &  316 & Blend with $^{13}$CH$_3$CH$_2$CN and $U$-lines \\ 
 \hline
  72 & 59$_{17,43}$--59$_{16,44}$ &  205~092.813 &    17 &  774 &        72.3 &  100 & Strong C$_2$H$_5$CN, CH$_3$OCH$_3$, and CH$_3$$^{13}$CH$_2$CN \\ 
  73 & 28$_{ 5,23}$--27$_{ 5,22}$ &  205~093.048 &     8 &  232 &       113.5 &  100 & Strong C$_2$H$_5$CN, CH$_3$OCH$_3$, and CH$_3$$^{13}$CH$_2$CN \\ 
  74 & 31$_{ 1,30}$--30$_{ 2,29}$ &  205~095.436 &    11 &  245 &        57.4 &  100 & Strong CH$_3$$^{13}$CH$_2$CN and CH$_3$OCH$_3$ \\ 
  75 & 31$_{ 2,30}$--30$_{ 2,29}$ &  205~095.823 &    11 &  245 &       127.9 &  100 & Strong CH$_3$$^{13}$CH$_2$CN and CH$_3$OCH$_3$ \\ 
  76 & 31$_{ 1,30}$--30$_{ 1,29}$ &  205~096.091 &    11 &  245 &       127.9 &  100 & Strong CH$_3$$^{13}$CH$_2$CN and CH$_3$OCH$_3$ \\ 
  77 & 31$_{ 2,30}$--30$_{ 1,29}$ &  205~096.478 &    11 &  245 &        57.4 &  100 & Strong CH$_3$$^{13}$CH$_2$CN and CH$_3$OCH$_3$ \\ 
  78 & 29$_{18,11}$--28$_{18,10}$$^\star$ &  205~308.386 &     8 &  332 &        74.6 &  100 & Strong SO$_2$ \\ 
  80 & 29$_{17,12}$--28$_{17,11}$$^\star$ &  205~313.243 &     8 &  321 &        79.7 &  100 & Strong SO$_2$ and $U$-line? \\ 
  82 & 54$_{14,40}$--53$_{15,39}$$^\star$ &  205~317.032 &    22 &  650 &        15.2 &  100 & Strong SO$_2$ and $U$-line? \\ 
  84 & 29$_{19,11}$--28$_{19,10}$ &  205~317.035 &     9 &  343 &        69.3 &  100 & Strong SO$_2$ and $U$-line? \\ 
  85 & 29$_{16,13}$--28$_{16,12}$$^\star$ &  205~334.455 &     8 &  311 &        84.4 &  100 & Strong CH$_3$$^{13}$CH$_2$CN \\ 
  87 & 29$_{20, 9}$--28$_{20, 8}$$^\star$ &  205~337.037 &     9 &  355 &        63.6 &  100 & Strong CH$_3$$^{13}$CH$_2$CN \\ 
  89 & 29$_{21, 8}$--28$_{21, 7}$$^\star$ &  205~366.726 &    10 &  368 &        57.7 &  100 & Blend with C$_2$H$_5$$^{13}$CN \\ 
  91 & 29$_{15,14}$--28$_{15,13}$$^\star$ &  205~375.865 &     8 &  301 &        88.9 &  100 & Strong C$_2$H$_5$CN \\ 
  93 & 29$_{14,15}$--28$_{14,14}$$^\star$ &  205~442.791 &     7 &  292 &        93.1 &  100 & Blend with CH$_3$$^{13}$CH$_2$CN and C$_2$H$_5$$^{13}$CN \\ 
  95 & 29$_{13,17}$--28$_{13,16}$$^\star$ &  205~542.814 &     7 &  284 &        97.0 &  271 & Blend with $U$-line \\ 
  97 & 29$_{12,18}$--28$_{12,17}$$^\star$ &  205~687.132 &     7 &  276 &       100.6 &  271 & Blend with C$_2$H$_3$CN, $\varv_{11}$ = 1, uncertain baseline \\ 
  99 & 29$_{27, 2}$--28$_{27, 1}$$^\star$ &  205~690.300 &    20 &  456 &        16.2 &  271 & Blend with C$_2$H$_3$CN, $\varv_{11}$ = 1, uncertain baseline \\ 
 101 & 29$_{11,19}$--28$_{11,18}$$^\star$ &  205~893.033 &     7 &  269 &       103.9 &  271 & Blend with C$_2$H$_5$$^{13}$CN \\ 
 103 & 29$_{10,20}$--28$_{10,19}$ &  206~188.338 &     7 &  263 &       106.9 &  280 & Blend with SO and $^{13}$CH$_2$CHCN \\ 
 104 & 29$_{10,19}$--28$_{10,18}$ &  206~190.002 &     7 &  263 &       106.9 &  280 & Blend with SO and $^{13}$CH$_2$CHCN \\ 
 105 & 29$_{ 4,25}$--28$_{ 4,24}$ &  206~280.705 &   100 &  240 &       117.1 &  280 & Blend with C$_2$H$_5$CN and C$_2$H$_5$CN, $\varv_{20}$ = 1 \\ 
 106 & 29$_{ 9,21}$--28$_{ 9,20}$ &  206~614.666 &     7 &  257 &       109.6 &  106 & Strong C$_2$H$_5$CN and CH$_3$OCHO \\ 
 107 & 29$_{ 9,20}$--28$_{ 9,19}$ &  206~639.557 &     7 &  257 &       109.6 &  106 & Blend with $U$-lines \\ 
 108 & 56$_{17,40}$--56$_{16,40}$ &  206~650.461 &    14 &  715 &         2.7 &  106 & Blend with C$_2$H$_5$CN \\ 
 109 & 56$_{17,39}$--56$_{16,40}$ &  206~650.601 &    14 &  715 &        67.2 &  106 & Blend with C$_2$H$_5$CN \\ 
 110 & 56$_{17,40}$--56$_{16,41}$ &  206~652.471 &    14 &  715 &        67.2 &  106 & Blend with C$_2$H$_5$CN \\ 
 111 & 56$_{17,39}$--56$_{16,41}$ &  206~652.612 &    14 &  715 &         2.7 &  106 & Blend with C$_2$H$_5$CN \\ 
 112 & 30$_{ 3,27}$--29$_{ 4,26}$ &  206~654.482 &     7 &  246 &        38.8 &  106 & Blend with C$_2$H$_5$CN \\ 
 113 & 29$_{ 6,24}$--28$_{ 6,23}$ &  206~929.917 &     8 &  244 &       115.8 &  117 & Strong C$_2$H$_5$CN, $\varv_{20}$ = 1 and C$_2$H$_5$CN \\ 
 114 & 30$_{ 4,27}$--29$_{ 4,26}$ &  206~996.130 &   100 &  246 &       121.8 &  117 & Blend with OCS, $\varv_2$ = 1 and NH$_2$$^{13}$CHO \\ 
 115 & 28$_{ 5,24}$--27$_{ 4,23}$ &  207~002.205 &   100 &  230 &        24.1 &  117 & Blend with OCS, $\varv_2$ = 1 and NH$_2$$^{13}$CHO \\ 
 116 & 30$_{ 3,27}$--29$_{ 3,26}$ &  207~175.063 &   100 &  246 &       121.8 &  117 & Blend with $U$-line \\ 
 117 & 29$_{ 8,22}$--28$_{ 8,21}$ &  207~183.249 &     7 &  252 &       112.1 &  117 & Blend with $U$-line \\ 
 118 & 12$_{10, 2}$--11$_{ 9, 3}$$^\star$ &  207~240.583 &    16 &  141 &        21.0 &  117 & Blend with CH$_3$OCHO and $U$-line \\ 
 120 & 12$_{10, 2}$--11$_{ 9, 2}$$^\star$ &  207~240.583 &    16 &  141 &         1.2 &  117 & Blend with CH$_3$OCHO and $U$-line \\ 
 122 & 32$_{ 0,32}$--31$_{ 0,31}$$^\star$ &  207~408.086 &   100 &  249 &       133.2 &  282 & Blend with C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 \\ 
 124 & 32$_{ 0,32}$--31$_{ 1,31}$$^\star$ &  207~408.141 &    17 &  249 &        67.2 &  282 & Blend with C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 \\ 
 126 & 29$_{ 8,21}$--28$_{ 8,20}$ &  207~451.586 &     7 &  252 &       112.1 &  282 & Blend with C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 and C$_2$H$_5$OH \\ 
 127 & 30$_{ 4,27}$--29$_{ 3,26}$ &  207~516.619 &     7 &  246 &        38.8 &  282 & Blend with CH$_3$CH$_3$CO, $\varv_t$ = 1 and $U$-line \\ 
 128 & 29$_{ 7,23}$--28$_{ 7,22}$ &  207~601.807 &     8 &  247 &       114.2 &  282 & Strong NH$_2$CHO, $\varv_{12}$ = 1 and C$_2$H$_3$CN \\ 
 129 & 20$_{ 6,15}$--19$_{ 5,14}$ &  207~703.938 &    15 &  166 &        13.7 &  282 & Blend with CH$_3$OCH$_3$ \\ 
 130 & 14$_{ 9, 6}$--13$_{ 8, 5}$$^\star$ &  208~513.304 &    16 &  144 &        19.3 &  168 & Blend with C$_2$H$_5$OH and C$_2$H$_3$CN \\ 
 132 & 14$_{ 9, 5}$--13$_{ 8, 6}$$^\star$ &  208~513.306 &    16 &  144 &        19.3 &  168 & Blend with C$_2$H$_5$OH and C$_2$H$_3$CN \\ 
 134 & 31$_{ 2,29}$--30$_{ 3,28}$ &  209~205.202 &     8 &  251 &        49.5 &   58 & Strong H$_2$CS and C$_2$H$_3$CN, $\varv_{15}$ = 1 \\ 
 135 & 31$_{ 3,29}$--30$_{ 3,28}$ &  209~217.484 &   100 &  251 &       126.8 &   58 & Strong C$_2$H$_3$CN, $\varv_{15}$ = 1, CH$_3$OCHO, and HC$_3$N \\ 
 136 & 31$_{ 2,29}$--30$_{ 2,28}$ &  209~225.073 &   100 &  251 &       126.8 &   58 & Strong CH$_3$OCHO and HC$_3$N \\ 
 137 & 31$_{ 3,29}$--30$_{ 2,28}$ &  209~237.276 &     8 &  251 &        49.5 &   58 & Strong HC$_3$N \\ 
 138 & 74$_{18,56}$--74$_{17,57}$$^\star$ &  209~239.716 &   197 & 1125 &        97.1 &   58 & Strong HC$_3$N \\ 
 140 & 29$_{ 7,22}$--28$_{ 7,21}$ &  209~426.660 &     9 &  248 &       114.3 &   58 & Strong CH$_3$OCH$_3$ and CH$_3$CH$_3$CO \\ 
 141 & 16$_{ 8, 9}$--15$_{ 7, 8}$$^\star$ &  209~662.326 &    16 &  150 &        17.7 &   45 & Strong C$_2$H$_3$CN, $\varv_{11}$ = 1, HC$^{13}$CCN, $\varv_7$ = 2, and HCC$^{13}$CN, $\varv_7$ = 2 \\ 
 143 & 16$_{ 8, 9}$--15$_{ 7, 9}$$^\star$ &  209~663.117 &    16 &  150 &         1.2 &   45 & Strong C$_2$H$_3$CN, $\varv_{11}$ = 1, HC$^{13}$CCN, $\varv_7$ = 2, and HCC$^{13}$CN, $\varv_7$ = 2 \\ 
 145 & 18$_{ 7,12}$--17$_{ 6,11}$ &  210~394.041 &    16 &  157 &        16.0 &   64 & Blend with C$_2$H$_5$OH and CH$_3$OCHO \\ 
 146 & 18$_{ 7,11}$--17$_{ 6,12}$ &  210~507.031 &    16 &  157 &        16.0 &   64 & Strong HC$_3$N, $\varv_7$ = 2 \\ 
 147 & 41$_{17,24}$--41$_{16,25}$$^\star$ &  210~945.438 &    10 &  465 &        43.1 &   37 & Strong NH$_2$$^{13}$CHO and C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 \\ 
 149 & 41$_{17,25}$--41$_{16,26}$$^\star$ &  210~945.438 &    10 &  465 &        43.1 &   37 & Strong NH$_2$$^{13}$CHO and C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 \\ 
 151 & 30$_{ 5,26}$--29$_{ 5,25}$ &  210~948.194 &     7 &  250 &       121.0 &   37 & Strong NH$_2$$^{13}$CHO and C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 \\ 
 152 & 29$_{ 5,25}$--28$_{ 4,24}$ &  211~213.126 &   100 &  240 &        26.6 &   33 & Strong H$_2$CO in absorption \\ 
 153 & 32$_{ 1,31}$--31$_{ 2,30}$ &  211~492.742 &    12 &  255 &        59.6 &   33 & Strong CH$_3$OCH$_3$ \\ 
 154 & 32$_{ 2,31}$--31$_{ 2,30}$ &  211~492.971 &    12 &  255 &       132.0 &   33 & Strong CH$_3$OCH$_3$ \\ 
 155 & 32$_{ 1,31}$--31$_{ 1,30}$ &  211~493.129 &    12 &  255 &       132.0 &   33 & Strong CH$_3$OCH$_3$ \\ 
 156 & 32$_{ 2,31}$--31$_{ 1,30}$ &  211~493.358 &    12 &  255 &        59.6 &   33 & Strong CH$_3$OCH$_3$ \\ 
 157 & 29$_{ 5,24}$--28$_{ 5,23}$ &  211~817.880 &   100 &  242 &       117.5 &   47 & Blend with CH$_3$OH, $\varv_t$ = 1 and $U$-line \\ 
 \hline
 158 & 18$_{17, 1}$--18$_{16, 2}$$^\star$ &  211~857.177 &    16 &  231 &         4.4 &   47 & Blend with C$_2$H$_3$CN, $\varv_{15}$ = 1 and $U$-line \\ 
 160 & 29$_{17,12}$--29$_{16,13}$$^\star$ &  211~859.692 &    10 &  320 &        24.2 &   47 & Blend with C$_2$H$_3$CN, $\varv_{15}$ = 1 and $U$-line \\ 
 162 & 29$_{17,12}$--29$_{16,14}$$^\star$ &  211~859.692 &    10 &  320 &         1.2 &   47 & Blend with C$_2$H$_3$CN, $\varv_{15}$ = 1 and $U$-line \\ 
 164 & 28$_{17,11}$--28$_{16,12}$$^\star$ &  211~880.904 &    10 &  311 &        22.6 &   47 & Blend with CH$_2$CH$^{13}$CN \\ 
 166 & 28$_{17,11}$--28$_{16,13}$$^\star$ &  211~880.904 &    10 &  311 &         1.1 &   47 & Blend with CH$_2$CH$^{13}$CN \\ 
 168 & 27$_{17,10}$--27$_{16,11}$$^\star$ &  211~896.387 &    11 &  301 &        20.9 &   47 & Strong C$_2$H$_3$CN, $\varv_{11}$ = 1 and C$_2$H$_5$OH \\ 
 170 & 27$_{17,10}$--27$_{16,12}$$^\star$ &  211~896.387 &    11 &  301 &         1.0 &   47 & Strong C$_2$H$_3$CN, $\varv_{11}$ = 1 and C$_2$H$_5$OH \\ 
 172 & 21$_{17, 4}$--21$_{16, 5}$$^\star$ &  211~896.595 &    13 &  251 &        10.4 &   47 & Strong C$_2$H$_3$CN, $\varv_{11}$ = 1 and C$_2$H$_5$OH \\ 
 174 & 21$_{17, 4}$--21$_{16, 6}$$^\star$ &  211~896.595 &    13 &  251 &         0.5 &   47 & Strong C$_2$H$_3$CN, $\varv_{11}$ = 1 and C$_2$H$_5$OH \\ 
 176 & 22$_{17, 5}$--22$_{16, 6}$$^\star$ &  211~905.280 &    13 &  259 &        12.2 &   47 & Blend with CH$_3$CH$_3$CO, $\varv_t$ = 1, C$_2$H$_3$CN, $\varv_{11}$ = 1, and $U$-line \\ 
 178 & 22$_{17, 5}$--22$_{16, 7}$$^\star$ &  211~905.280 &    13 &  259 &         0.6 &   47 & Blend with CH$_3$CH$_3$CO, $\varv_t$ = 1, C$_2$H$_3$CN, $\varv_{11}$ = 1, and $U$-line \\ 
 180 & 26$_{17,10}$--26$_{16,11}$$^\star$ &  211~906.656 &    11 &  292 &        19.2 &   47 & Blend with CH$_3$CH$_3$CO, $\varv_t$ = 1, C$_2$H$_3$CN, $\varv_{11}$ = 1, and $U$-line \\ 
 182 & 26$_{17,10}$--26$_{16,10}$ &  211~906.656 &    11 &  292 &         0.9 &   47 & Blend with CH$_3$CH$_3$CO, $\varv_t$ = 1, C$_2$H$_3$CN, $\varv_{11}$ = 1, and $U$-line \\ 
 183 & 26$_{17, 9}$--26$_{16,10}$ &  211~906.776 &   100 &  292 &        19.2 &   47 & Blend with CH$_3$CH$_3$CO, $\varv_t$ = 1, C$_2$H$_3$CN, $\varv_{11}$ = 1, and $U$-line \\ 
 184 & 23$_{17, 6}$--23$_{16, 7}$$^\star$ &  211~911.066 &    12 &  266 &        14.0 &   47 & Blend with CH$_3$CH$_3$CO, $\varv_t$ = 1, C$_2$H$_3$CN, $\varv_{11}$ = 1, and $U$-line \\ 
 186 & 23$_{17, 6}$--23$_{16, 8}$$^\star$ &  211~911.066 &    12 &  266 &         0.7 &   47 & Blend with CH$_3$CH$_3$CO, $\varv_t$ = 1, C$_2$H$_3$CN, $\varv_{11}$ = 1, and $U$-line \\ 
 188 & 25$_{17, 8}$--25$_{16, 9}$$^\star$ &  211~912.208 &    11 &  283 &        17.5 &   47 & Blend with CH$_3$CH$_3$CO, $\varv_t$ = 1, C$_2$H$_3$CN, $\varv_{11}$ = 1, and $U$-line \\ 
 190 & 25$_{17, 8}$--25$_{16,10}$$^\star$ &  211~912.208 &    11 &  283 &         0.9 &   47 & Blend with CH$_3$CH$_3$CO, $\varv_t$ = 1, C$_2$H$_3$CN, $\varv_{11}$ = 1, and $U$-line \\ 
 192 & 24$_{17, 8}$--24$_{16, 9}$$^\star$ &  211~913.523 &    12 &  275 &        15.8 &   47 & Blend with CH$_3$CH$_3$CO, $\varv_t$ = 1, C$_2$H$_3$CN, $\varv_{11}$ = 1, and $U$-line \\ 
 194 & 24$_{17, 8}$--24$_{16, 8}$ &  211~913.523 &    12 &  275 &         0.8 &   47 & Blend with CH$_3$CH$_3$CO, $\varv_t$ = 1, C$_2$H$_3$CN, $\varv_{11}$ = 1, and $U$-line \\ 
 195 & 24$_{17, 7}$--24$_{16, 8}$ &  211~913.626 &   100 &  275 &        15.8 &   47 & Blend with CH$_3$CH$_3$CO, $\varv_t$ = 1, C$_2$H$_3$CN, $\varv_{11}$ = 1, and $U$-line \\ 
 196 & 20$_{ 6,14}$--19$_{ 5,15}$ &  212~146.465 &    17 &  166 &        13.4 &   36 & Strong NH$_2$CHO, $\varv_{12}$ = 1 \\ 
 197 & 30$_{ 4,26}$--29$_{ 4,25}$ &  212~369.981 &   100 &  249 &       121.2 &   36 & Blend with $U$-line, NH$_2$$^{13}$CHO, $\varv_{12}$ = 1, and C$_3$H$_7$CN, uncertain \\ 
 & & & & & & &  baseline \\ 
 198 & 30$_{18,12}$--29$_{18,11}$$^\star$ &  212~385.195 &     8 &  341 &        80.3 &   36 & Strong NH$_2$CHO, $\varv_{12}$ = 1 \\ 
 200 & 71$_{18,54}$--71$_{17,55}$ &  212~386.233 &   123 & 1051 &        91.5 &   36 & Strong NH$_2$CHO, $\varv_{12}$ = 1 \\ 
 201 & 30$_{19,11}$--29$_{19,10}$$^\star$ &  212~390.341 &     8 &  353 &        75.2 &   36 & Strong NH$_2$CHO, $\varv_{12}$ = 1 \\ 
 203 & 30$_{17,13}$--29$_{17,12}$$^\star$ &  212~394.782 &     8 &  331 &        85.2 &   36 & Strong NH$_2$CHO, $\varv_{12}$ = 1 \\ 
 205 & 30$_{20,11}$--29$_{20,10}$$^\star$ &  212~407.836 &     9 &  365 &        69.7 &   36 & Blend with NH$_2$$^{13}$CHO, $\varv_{12}$ = 1 and CH$_3$CH$_3$CO, $\varv_t$ = 1 \\ 
 207 & 30$_{16,14}$--29$_{16,13}$$^\star$ &  212~422.256 &     8 &  320 &        89.8 &   36 & Strong NH$_2$CHO \\ 
 209 & 30$_{21, 9}$--29$_{21, 8}$$^\star$ &  212~435.843 &     9 &  377 &        64.0 &   36 & Strong NH$_2$CHO \\ 
 211 & 30$_{15,15}$--29$_{15,14}$$^\star$ &  212~471.882 &     8 &  311 &        94.1 &   99 & Blend with C$_2$H$_5$OH, CH$_3$OCHO, and C$_3$H$_7$CN \\ 
 213 & 30$_{22, 8}$--29$_{22, 7}$$^\star$ &  212~472.920 &    10 &  391 &        58.0 &   99 & Blend with C$_2$H$_5$OH, CH$_3$OCHO, and C$_3$H$_7$CN \\ 
 215 & 30$_{14,17}$--29$_{14,16}$$^\star$ &  212~549.578 &     7 &  302 &        98.2 &   99 & Blend with NH$_2$$^{13}$CHO and $U$-line \\ 
 217 & 29$_{ 6,23}$--28$_{ 6,22}$ &  212~550.033 &    10 &  244 &       116.6 &   99 & Blend with NH$_2$$^{13}$CHO and $U$-line \\ 
 218 & 30$_{13,17}$--29$_{13,16}$$^\star$ &  212~663.809 &     7 &  294 &       102.0 &   99 & Blend with C$_2$H$_5$OH and $^{13}$CH$_2$CHCN \\ 
 220 & 30$_{12,19}$--29$_{12,18}$$^\star$ &  212~827.135 &     7 &  286 &       105.4 &   99 & Strong $^{13}$CH$_2$CHCN and NH$_2$CHO \\ 
 222 & 30$_{28, 3}$--29$_{28, 2}$$^\star$ &  212~834.203 &   100 &  482 &        16.2 &   99 & Strong $^{13}$CH$_2$CHCN and NH$_2$CHO \\ 
 224 & 21$_{ 6,16}$--20$_{ 5,15}$ &  212~845.604 &    15 &  173 &        13.7 &   99 & Blend with $^{13}$CH$_2$CHCN, uncertain baseline \\ 
 225 & 11$_{11, 1}$--10$_{10, 0}$$^\star$ &  212~997.517 &   100 &  143 &        23.2 &   99 & Blend with C$_2$H$_5$CN \\ 
 227 & 11$_{11, 0}$--10$_{10, 0}$$^\star$ &  212~997.572 &    16 &  143 &         1.3 &   99 & Blend with C$_2$H$_5$CN \\ 
 229 & 30$_{11,20}$--29$_{11,19}$ &  213~059.055 &     7 &  279 &       108.7 &   48 & Strong SO$_2$ \\ 
 230 & 30$_{11,19}$--29$_{11,18}$ &  213~059.228 &     7 &  279 &       108.7 &   48 & Strong SO$_2$ \\ 
 231 & 31$_{ 3,28}$--30$_{ 4,27}$ &  213~169.983 &     7 &  255 &        41.1 &   48 & Strong C$_2$H$_3$CN, $\varv_{11}$ = 1 \\ 
 232 & 30$_{10,21}$--29$_{10,20}$ &  213~390.877 &     7 &  273 &       111.6 &   48 & Blend with CH$_3$CH$_3$CO, $\varv_t$ = 1, uncertain baseline \\ 
 233 & 31$_{ 4,28}$--30$_{ 4,27}$ &  213~392.357 &     7 &  255 &       125.9 &   48 & Blend with CH$_3$CH$_3$CO, $\varv_t$ = 1, uncertain baseline \\ 
 234 & 30$_{10,20}$--29$_{10,19}$ &  213~394.012 &     7 &  273 &       111.6 &   48 & Blend with CH$_3$CH$_3$CO, $\varv_t$ = 1, uncertain baseline \\ 
 235 & 16$_{ 4,13}$--15$_{ 1,14}$ &  213~509.497 &    41 &  135 &         0.8 &   48 & Blend with C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 and $U$-line \\ 
 236 & 31$_{ 3,28}$--30$_{ 3,27}$ &  213~511.580 &   100 &  255 &       125.9 &   48 & Blend with C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 and $U$-line \\ 
 237 & 31$_{ 4,28}$--30$_{ 3,27}$ &  213~733.932 &     7 &  255 &        41.1 &   48 & Blend with C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 \\ 
 238 & 30$_{ 6,25}$--29$_{ 6,24}$ &  213~791.953 &   100 &  253 &       120.1 &   48 & Blend with CH$_3$CH$_3$CO, $\varv_t$ = 1, C$_2$H$_3$CN, $\varv_{15}$ = 1, and $U$-line \\ 
 239 & 33$_{ 0,33}$--32$_{ 1,32}$$^\star$ &  213~807.575 &    17 &  259 &        69.4 &   48 & Blend with C$_2$H$_5$CN \\ 
 241 & 33$_{ 0,33}$--32$_{ 0,32}$$^\star$ &  213~807.621 &   100 &  259 &       137.4 &   48 & Blend with C$_2$H$_5$CN \\ 
 243 & 30$_{ 9,22}$--29$_{ 9,21}$ &  213~865.943 &     7 &  267 &       114.2 &   48 & Blend with C$_2$H$_5$OH and C$_2$H$_5$$^{13}$CN \\ 
 244 & 30$_{ 9,21}$--29$_{ 9,20}$ &  213~909.016 &     7 &  267 &       114.2 &   48 & Blend with C$_3$H$_7$CN and $^{13}$CH$_3$OH \\ 
 245 & 13$_{10, 3}$--12$_{ 9, 4}$$^\star$ &  214~314.472 &    16 &  145 &        21.1 &   75 & Strong $^{13}$CH$_3$CN and C$_2$H$_5$$^{13}$CN \\ 
 247 & 13$_{10, 3}$--12$_{ 9, 3}$$^\star$ &  214~314.472 &    16 &  145 &         1.2 &   75 & Strong $^{13}$CH$_3$CN and C$_2$H$_5$$^{13}$CN \\ 
 249 & 30$_{ 8,23}$--29$_{ 8,22}$ &  214~467.553 &     8 &  262 &       116.6 &   75 & Blend with CH$_3$OCH$_3$ \\ 
 250 & 30$_{ 7,24}$--29$_{ 7,23}$ &  214~783.566 &     8 &  257 &       118.6 &   75 & Strong CH$_3$OCHO \\ 
 251 & 30$_{ 8,22}$--29$_{ 8,21}$ &  214~889.514 &     8 &  262 &       116.6 &   74 & Blend with $^{13}$CH$_2$CHCN \\ 
 252 & 31$_{ 4,27}$--30$_{ 5,26}$ &  214~982.375 &   100 &  260 &        31.4 &   74 & Strong C$_2$H$_5$$^{13}$CN and $^{13}$CH$_3$CN, $\varv_8$ = 1 \\ 
 253 & 15$_{ 9, 7}$--14$_{ 8, 6}$$^\star$ &  215~567.674 &    16 &  149 &        19.5 &   74 & Strong C$_2$H$_5$CN, $\varv_{20}$ = 1 and C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 \\ 
 255 & 15$_{ 9, 7}$--14$_{ 8, 7}$$^\star$ &  215~567.680 &    16 &  149 &         1.2 &   74 & Strong C$_2$H$_5$CN, $\varv_{20}$ = 1 and C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 \\ 
 \hline
 257 & 32$_{ 2,30}$--31$_{ 3,29}$ &  215~600.637 &     8 &  261 &        51.8 &   74 & Strong C$_2$H$_5$CN \\ 
 258 & 32$_{ 3,30}$--31$_{ 3,29}$ &  215~608.230 &   100 &  261 &       131.0 &   74 & Strong C$_2$H$_5$CN \\ 
 259 & 32$_{ 2,30}$--31$_{ 2,29}$ &  215~612.952 &   100 &  261 &       131.0 &   74 & Strong C$_2$H$_5$CN \\ 
 260 & 32$_{ 3,30}$--31$_{ 2,29}$ &  215~620.426 &     8 &  261 &        51.8 &   74 & Strong C$_2$H$_5$CN \\ 
 261 & 36$_{ 9,27}$--36$_{ 6,30}$ &  215~623.049 &    44 &  336 &         2.1 &   74 & Strong C$_2$H$_5$CN \\ 
 262 & 30$_{ 5,26}$--29$_{ 4,25}$ &  215~880.577 &   100 &  249 &        29.1 &   55 & Strong $^{13}$CH$_3$OH \\ 
 263 & 17$_{ 8,10}$--16$_{ 7, 9}$ &  216~663.426 &    16 &  155 &        17.9 &   55 & Blend with C$_2$H$_5$OH, C$_3$H$_7$CN, and $U$-line \\ 
 264 & 17$_{ 8, 9}$--16$_{ 7, 9}$ &  216~663.574 &    16 &  155 &         1.2 &   55 & Blend with C$_2$H$_5$OH, C$_3$H$_7$CN, and $U$-line \\ 
 265 & 17$_{ 8,10}$--16$_{ 7,10}$ &  216~665.420 &    16 &  155 &         1.2 &   55 & Blend with C$_2$H$_5$OH, C$_3$H$_7$CN, and $U$-line \\ 
 266 & 17$_{ 8, 9}$--16$_{ 7,10}$ &  216~665.567 &    16 &  155 &        17.9 &   55 & Blend with C$_2$H$_5$OH, C$_3$H$_7$CN, and $U$-line \\ 
 267 & 61$_{ 4,57}$--61$_{ 4,58}$$^\star$ &  216~666.695 &   128 &  715 &         4.3 &   55 & Blend with C$_2$H$_5$OH, C$_3$H$_7$CN, and $U$-line \\ 
 269 & 61$_{ 5,57}$--61$_{ 4,58}$$^\star$ &  216~666.699 &   128 &  715 &        29.9 &   55 & Blend with C$_2$H$_5$OH, C$_3$H$_7$CN, and $U$-line \\ 
 271 & 19$_{ 7,13}$--18$_{ 6,12}$ &  217~192.379 &    16 &  163 &        16.1 &   50 & Strong CH$_3$OCH$_3$ \\ 
 272 & 30$_{ 7,23}$--29$_{ 7,22}$ &  217~285.278 &    10 &  258 &       118.8 &   50 & Blend with $^{13}$CN, CH$_2$$^{13}$CHCN, and $U$-line \\ 
 273 & 22$_{ 6,17}$--21$_{ 5,16}$ &  217~407.902 &    17 &  181 &        13.6 &   50 & Strong HC$^{13}$CCN, $^{13}$CH$_3$OH, HCC$^{13}$CN, and $^{13}$CN in absorption \\ 
 274 & 21$_{ 2,20}$--20$_{ 1,20}$ &  217~409.248 &    52 &  160 &         0.3 &   50 & Strong HC$^{13}$CCN, $^{13}$CH$_3$OH, HCC$^{13}$CN, and $^{13}$CN in absorption \\ 
 275 & 19$_{ 7,12}$--18$_{ 6,13}$ &  217~414.071 &    16 &  163 &        16.1 &   50 & Strong  HCC$^{13}$CN and $^{13}$CN in absorption \\ 
 276 & 31$_{ 5,27}$--30$_{ 5,26}$ &  217~441.193 &   100 &  260 &       125.2 &   50 & Strong $^{13}$CN in absorption, CH$_2$$^{13}$CHCN, and CH$_2$CH$^{13}$CN \\ 
\hline
 277 & 31$_{18,13}$--30$_{18,12}$$^\star$ &  219~461.424 &     8 &  352 &        86.0 &   92 & Strong C$_2$H$_5$CN \\ 
 279 & 31$_{19,12}$--30$_{19,11}$$^\star$ &  219~462.695 &     8 &  363 &        81.0 &   92 & Strong C$_2$H$_5$CN \\ 
 281 & 31$_{17,14}$--30$_{17,13}$$^\star$ &  219~476.189 &     8 &  341 &        90.7 &   92 & Strong NH$_2$CN \\ 
 283 & 31$_{20,11}$--30$_{20,10}$$^\star$ &  219~477.375 &     9 &  375 &        75.7 &   92 & Strong NH$_2$CN \\ 
 285 & 31$_{21,10}$--30$_{21, 9}$$^\star$ &  219~503.439 &     9 &  388 &        70.2 &   92 & Strong C$_2$H$_5$CN \\ 
 287 & 31$_{16,15}$--30$_{16,14}$$^\star$ &  219~510.475 &     8 &  331 &        95.1 &   92 & Strong C$_2$H$_5$CN \\ 
 289 & 31$_{22, 9}$--30$_{22, 8}$$^\star$ &  219~539.304 &     9 &  401 &        64.4 &   92 & Strong HNCO, $\varv_5$ = 1 and HNCO \\ 
 291 & 31$_{15,16}$--30$_{15,15}$$^\star$ &  219~569.004 &     8 &  321 &        99.3 &   92 & Strong C$^{18}$O \\ 
 293 & 62$_{17,46}$--61$_{18,43}$ &  219~569.366 &   161 &  836 &        17.0 &   92 & Strong C$^{18}$O \\ 
 294 & 62$_{17,45}$--61$_{18,44}$ &  219~572.725 &   161 &  836 &        17.0 &   92 & Strong C$^{18}$O \\ 
 295 & 31$_{24, 7}$--30$_{24, 6}$$^\star$ &  219~635.627 &    11 &  429 &        52.0 &   92 & Blend with C$_2$H$_5$CN, $\varv_{20}$ = 1 and CH$_3$CN, $\varv_4$ = 1 \\ 
 297 & 32$_{ 3,29}$--31$_{ 4,28}$ &  219~637.655 &     7 &  266 &        43.4 &   92 & Blend with C$_2$H$_5$CN, $\varv_{20}$ = 1 and CH$_3$CN, $\varv_4$ = 1 \\ 
 298 & 31$_{14,17}$--30$_{14,16}$$^\star$ &  219~658.346 &     7 &  312 &       103.2 &   92 & Strong NH$_2$CN and HNCO \\ 
 300 & 32$_{ 4,29}$--31$_{ 4,28}$ &  219~781.349 &   100 &  266 &       130.1 &   92 & Strong HNCO, $\varv_6$ = 1 and HNCO \\ 
 301 & 31$_{13,19}$--30$_{13,18}$$^\star$ &  219~787.930 &     7 &  304 &       106.9 &   92 & Strong HNCO \\ 
 303 & 21$_{ 6,15}$--20$_{ 5,16}$ &  219~793.028 &   100 &  173 &        13.1 &   92 & Strong HNCO \\ 
\hline
 304 & 34$_{ 1,34}$--33$_{ 0,33}$$^\star$ &  220~205.386 &   100 &  270 &        71.6 &   98 & Strong HNCO, $\varv_5$ = 1 and C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 \\ 
 306 & 34$_{ 1,34}$--33$_{ 1,33}$$^\star$ &  220~205.400 &    17 &  270 &       141.6 &   98 & Strong HNCO, $\varv_5$ = 1 and C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 \\ 
 308 & 58$_{18,41}$--58$_{17,41}$$^\star$ &  220~209.432 &    15 &  764 &         2.8 &   98 & Strong HNCO, $\varv_5$ = 1 and C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 \\ 
 310 & 58$_{18,41}$--58$_{17,42}$$^\star$ &  220~209.852 &    15 &  764 &        68.8 &   98 & Strong HNCO, $\varv_5$ = 1 and C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 \\ 
 312 & 31$_{11,21}$--30$_{11,20}$ &  220~231.977 &     7 &  289 &       113.4 &   98 & Blend with CH$_3$CN and $U$-line \\ 
 313 & 31$_{11,20}$--30$_{11,19}$ &  220~232.321 &     7 &  289 &       113.4 &   98 & Blend with CH$_3$CN and $U$-line \\ 
 314 & 31$_{ 6,26}$--30$_{ 6,25}$ &  220~580.985 &   100 &  264 &       124.3 &   98 & Strong CH$_3$$^{13}$CN and HNCO \\ 
 315 & 31$_{10,22}$--30$_{10,21}$ &  220~603.352 &     7 &  283 &       116.2 &   98 & Strong CH$_3$CN, CH$_3$$^{13}$CN, and C$_2$H$_5$OH \\ 
 316 & 62$_{ 4,58}$--62$_{ 3,59}$$^\star$ &  220~606.847 &   154 &  735 &        30.0 &   98 & Strong CH$_3$$^{13}$CN and C$_2$H$_5$OH \\ 
 318 & 62$_{ 5,58}$--62$_{ 4,59}$$^\star$ &  220~606.849 &   154 &  735 &        30.0 &   98 & Strong CH$_3$$^{13}$CN and C$_2$H$_5$OH \\ 
 320 & 31$_{10,21}$--30$_{10,20}$ &  220~609.106 &     7 &  283 &       116.2 &   98 & Strong CH$_3$$^{13}$CN and C$_2$H$_5$OH \\ 
\hline
%&&&&&&& \\[-8pt]
 321 & 33$_{ 3,30}$--32$_{ 4,29}$ &  226~072.922 &     7 &  276 &        45.7 &  278 & Blend with c-C$_2$H$_4$O and $^{13}$CH$_3$OH \\ 
 322 & 33$_{ 4,30}$--32$_{ 4,29}$ &  226~165.300 &     7 &  276 &       134.3 &  278 & Blend with CN in absorption and CH$_3$CH$_3$CO, $\varv_t$ = 1 \\ 
 323 & 33$_{ 3,30}$--32$_{ 3,29}$ &  226~216.618 &   100 &  276 &       134.3 &  278 & Blend with CH$_3$CH$_3$CO and CN in absorption \\ 
 324 & 33$_{ 4,30}$--32$_{ 3,29}$ &  226~309.069 &     7 &  276 &        45.8 &  278 & Strong CN in absorption \\ 
 325 & 32$_{ 5,28}$--31$_{ 4,27}$ &  226~357.720 &     9 &  270 &        34.1 &  278 & Strong CN in absorption \\ 
 326 & 32$_{19,13}$--31$_{19,12}$$^\star$ &  226~534.021 &     8 &  373 &        86.7 &  278 & Blend with CH$_2$NH \\ 
 328 & 32$_{18,15}$--31$_{18,14}$$^\star$ &  226~537.002 &   100 &  362 &        91.5 &  278 & Blend with CH$_2$NH \\ 
 330 & 32$_{20,13}$--31$_{20,12}$$^\star$ &  226~545.568 &     8 &  385 &        81.6 &  278 & Blend with CH$_2$NH \\ 
 332 & 32$_{17,15}$--31$_{17,14}$$^\star$ &  226~557.411 &     8 &  351 &        96.1 &  278 & Blend with C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 \\ 
 334 & 32$_{21,11}$--31$_{21,10}$$^\star$ &  226~569.424 &     9 &  398 &        76.2 &  278 & Blend with CH$_3$COOH, C$_2$H$_5$OH, and CN in absorption \\ 
 336 & 32$_{16,16}$--31$_{16,15}$$^\star$ &  226~599.078 &     8 &  341 &       100.4 &  278 & Blend with C$_2$H$_5$$^{13}$CN \\ 
 338 & 35$_{ 0,35}$--34$_{ 1,34}$$^\star$ &  226~601.560 &    18 &  280 &        73.8 &  278 & Blend with C$_2$H$_5$$^{13}$CN \\ 
 340 & 35$_{ 0,35}$--34$_{ 0,34}$$^\star$ &  226~601.561 &    18 &  280 &       145.8 &  278 & Blend with C$_2$H$_5$$^{13}$CN \\ 
 342 & 32$_{22,10}$--31$_{22, 9}$$^\star$ &  226~603.850 &     9 &  411 &        70.6 &  278 & Blend with C$_2$H$_5$$^{13}$CN \\ 
 344 & 32$_{15,17}$--31$_{15,16}$$^\star$ &  226~667.222 &     8 &  332 &       104.5 &   96 & Strong CN in absorption and C$_2$H$_5$OH \\ 
 346 & 32$_{14,18}$--31$_{14,17}$$^\star$ &  226~769.121 &     8 &  323 &       108.3 &   96 & Strong CN in absorption \\ 
 348 & 32$_{13,20}$--31$_{13,19}$$^\star$ &  226~915.261 &     8 &  314 &       111.8 &   96 & Strong CN in absorption \\ 
 350 & 32$_{12,21}$--31$_{12,20}$$^\star$ &  227~121.372 &     7 &  307 &       115.1 &   96 & Blend with C$_2$H$_5$CN, uncertain baseline \\ 
 \hline
 352 & 32$_{11,22}$--31$_{11,21}$ &  227~412.121 &     7 &  300 &       118.1 &   85 & Strong HC$_3$N \\ 
 353 & 32$_{11,21}$--31$_{11,20}$ &  227~412.786 &     7 &  300 &       118.1 &   85 & Strong HC$_3$N \\ 
 354 & 31$_{ 6,25}$--30$_{ 6,24}$ &  227~600.701 &    10 &  265 &       125.4 &   85 & Strong C$_2$H$_5$OH and NH$_2$CHO \\ 
 355 & 32$_{10,23}$--31$_{10,22}$ &  227~826.118 &     8 &  293 &       120.8 &   85 & Blend with CH$_3$OH \\ 
 356 & 32$_{10,22}$--31$_{10,21}$ &  227~836.414 &     8 &  293 &       120.8 &   85 & Blend with CH$_3$CH$_3$CO \\ 
 357 & 22$_{ 6,16}$--21$_{ 5,17}$ &  227~855.315 &    20 &  180 &        12.7 &   85 & Blend with HC$^{13}$CCN, $\varv_7$ = 2, HCC$^{13}$CN, $\varv_7$ = 2, and $U$-line \\ 
\hline
 358 & 81$_{10,71}$--81$_{ 9,72}$$^\star$ &  231~205.772 &  1715 & 1244 &        77.8 &  183 & Strong $^{13}$CS and $U$-line \\ 
\hline
 360 & 34$_{ 3,31}$--33$_{ 4,30}$ &  232~486.365 &     7 &  287 &        48.0 &   19 & Strong C$_2$H$_5$$^{13}$CN and C$_2$H$_5$OH \\ 
 361 & 34$_{ 4,31}$--33$_{ 4,30}$ &  232~545.336 &    50 &  287 &       138.4 &   19 & Blend uith C$_2$H$_5$CN and C$_2$H$_5$OH \\ 
 362 & 34$_{ 3,31}$--33$_{ 3,30}$ &  232~578.686 &    50 &  287 &       138.4 &   19 & Blend with CH$_3$$^{13}$CH$_2$CN and $^{13}$CH$_2$CHCN \\ 
 363 & 34$_{ 4,31}$--33$_{ 3,30}$ &  232~637.775 &     8 &  287 &        48.0 &   19 & Blend with CH$_3$OH, $\varv_t$ = 1, CH$_3$CH$_3$CO, and $^{13}$CH$_2$CO \\ 
 364 & 12$_{12, 0}$--11$_{11, 1}$$^\star$ &  232~895.717 &    15 &  153 &        25.4 &   19 & Blend with C$_2$H$_5$CN and $^{13}$CH$_3$CN, $\varv_8$ = 1 \\ 
 366 & 12$_{12, 0}$--11$_{11, 0}$$^\star$ &  232~895.717 &    15 &  153 &         1.4 &   19 & Blend with C$_2$H$_5$CN and $^{13}$CH$_3$CN, $\varv_8$ = 1 \\ 
\hline
 368 & 33$_{10,24}$--32$_{10,23}$ &  235~059.537 &    50 &  304 &       125.4 &  131 & Strong CH$_3$OCHO and C$_2$H$_5$CN \\ 
 369 & 33$_{10,23}$--32$_{10,22}$ &  235~077.408 &     8 &  304 &       125.4 &  131 & Strong CH$_3$CH$_3$CO and C$_2$H$_5$OH \\ 
 370 & 16$_{10, 7}$--15$_{ 9, 6}$$^\star$ &  235~511.949 &    15 &  159 &        21.6 &  131 & Strong HC$^{13}$CCN \\ 
 372 & 16$_{10, 6}$--15$_{ 9, 7}$$^\star$ &  235~511.949 &    15 &  159 &        21.6 &  131 & Strong HC$^{13}$CCN \\ 
 374 & 33$_{ 9,25}$--32$_{ 9,24}$ &  235~683.207 &    50 &  299 &       127.8 &  131 & Blend with HCC$^{13}$CN, $\varv_5$ = 1/$\varv_7$ = 3 \\ 
 375 & 33$_{ 9,24}$--32$_{ 9,23}$ &  235~875.700 &     8 &  299 &       127.8 &  131 & Strong $^{13}$CH$_3$OH and CH$_3$OCHO \\ 
 376 & 34$_{ 4,30}$--33$_{ 5,29}$ &  235~952.121 &   100 &  292 &        39.0 &  131 & Strong C$_2$H$_5$$^{13}$CN, $^{13}$CH$_3$OH, and SiS \\ 
 377 & 33$_{ 7,27}$--32$_{ 7,26}$ &  236~011.028 &    50 &  289 &       131.6 &  131 & Strong $^{13}$CH$_3$OH \\ 
\hline
%&&&&&&& \\[-8pt]
 378 & 66$_{ 4,62}$--66$_{ 3,63}$$^\star$ &  236~269.468 &   357 &  816 &        30.1 &   37 & Blend with NH$_2$CH$_2$CN and H$_2$C$^{34}$S \\ 
 380 & 66$_{ 5,62}$--66$_{ 4,63}$$^\star$ &  236~269.469 &   357 &  816 &        30.1 &   37 & Blend with NH$_2$CH$_2$CN and H$_2$C$^{34}$S \\ 
 382 & 33$_{ 8,26}$--32$_{ 8,25}$ &  236~274.518 &    50 &  294 &       130.0 &   37 & Blend with NH$_2$CH$_2$CN and H$_2$C$^{34}$S \\ 
 383 & 23$_{ 6,17}$--22$_{ 5,18}$ &  236~483.115 &   100 &  188 &        12.0 &   37 & Blend with NH$_2$CH$_2$CN and CH$_2$$^{13}$CHCN \\ 
\hline
%&&&&&&& \\[-8pt]
 384 & 34$_{23,11}$--33$_{23,10}$$^\star$ &  240~768.473 &     9 &  447 &        77.2 &  216 & Strong CH$_3$$^{13}$CH$_2$CN, CH$_3$CH$_3$CO, and C$_2$H$_5$OH \\ 
 386 & 34$_{16,18}$--33$_{16,17}$$^\star$ &  240~777.277 &     8 &  363 &       110.8 &  216 & Strong CH$_3$$^{13}$CH$_2$CN, CH$_3$CH$_3$CO, and C$_2$H$_5$OH \\ 
 388 & 34$_{15,19}$--33$_{15,18}$$^\star$ &  240~866.895 &     8 &  354 &       114.6 &  216 & Strong C$_2$H$_5$CN and HNCO \\ 
 390 & 34$_{14,21}$--33$_{14,20}$$^\star$ &  240~996.801 &     8 &  345 &       118.2 &  216 & Strong C$_2$H$_5$$^{13}$CN, CH$_3$CH$_3$CO, and C$^{34}$S \\ 
 392 & 33$_{ 7,26}$--32$_{ 7,25}$ &  241~104.938 &    12 &  290 &       132.3 &  216 & Blend with CH$_3$$^{13}$CH$_2$CN and $U$-line \\ 
 393 & 36$_{ 2,34}$--35$_{ 3,33}$ &  241~154.165 &    10 &  304 &        60.8 &  216 & Strong CH$_3$OH, $\varv_t$ = 1 \\ 
 394 & 36$_{ 3,34}$--35$_{ 3,33}$ &  241~155.214 &    10 &  304 &       147.7 &  216 & Strong CH$_3$OH, $\varv_t$ = 1 \\ 
 395 & 36$_{ 2,34}$--35$_{ 2,33}$ &  241~155.889 &    10 &  304 &       147.7 &  216 & Strong CH$_3$OH, $\varv_t$ = 1 \\ 
 396 & 36$_{ 3,34}$--35$_{ 2,33}$ &  241~156.938 &    10 &  304 &        60.8 &  216 & Strong CH$_3$OH, $\varv_t$ = 1 \\ 
 397 & 34$_{29, 5}$--33$_{29, 4}$$^\star$ &  241~179.811 &    17 &  543 &        38.8 &  216 & Strong CH$_3$OH, $\varv_t$ = 1 \\ 
 399 & 34$_{13,22}$--33$_{13,21}$$^\star$ &  241~179.912 &     8 &  337 &       121.5 &  216 & Strong CH$_3$OH, $\varv_t$ = 1 \\ 
 401 & 65$_{ 3,62}$--65$_{ 2,63}$$^\star$ &  241~187.055 &   355 &  784 &        22.6 &  216 & Strong CH$_3$OH, $\varv_t$ = 1 \\ 
 403 & 65$_{ 3,62}$--65$_{ 3,63}$$^\star$ &  241~187.055 &   355 &  784 &         3.4 &  216 & Strong CH$_3$OH, $\varv_t$ = 1 \\ 
\hline
%&&&&&&& \\[-8pt]
 405 & 21$_{ 8,14}$--20$_{ 7,13}$ &  244~391.993 &    15 &  180 &        18.5 &   46 & Strong $^{13}$CH$_3$CH$_2$CN and C$_2$H$_5$CN \\ 
 406 & 21$_{ 8,13}$--20$_{ 7,13}$ &  244~396.589 &    15 &  180 &         1.4 &   46 & Strong $^{13}$CH$_3$CH$_2$CN and C$_2$H$_5$CN \\ 
 407 & 23$_{ 5,18}$--22$_{ 4,19}$ &  244~399.583 &    45 &  185 &         5.5 &   46 & Strong $^{13}$CH$_3$CH$_2$CN and C$_2$H$_5$CN \\ 
 408 & 21$_{ 8,14}$--20$_{ 7,14}$ &  244~437.241 &    15 &  180 &         1.4 &   46 & Blend with C$_2$H$_5$CN, C$_2$H$_5$OH, and $U$-line \\ 
 409 & 21$_{ 8,13}$--20$_{ 7,14}$ &  244~441.837 &    15 &  180 &        18.5 &   46 & Blend with C$_2$H$_5$CN, C$_2$H$_5$OH, and $U$-line \\ 
 410 & 23$_{ 7,16}$--22$_{ 6,17}$ &  245~129.808 &    16 &  191 &        16.1 &   72 & Strong CH$_2$NH \\ 
 411 & 36$_{ 3,33}$--35$_{ 4,32}$ &  245~273.854 &   100 &  310 &        52.6 &   72 & Strong HC$_3$N, $\varv_4$ = 1 and C$_2$H$_5$$^{13}$CN \\ 
 412 & 36$_{ 4,33}$--35$_{ 4,32}$ &  245~297.601 &   100 &  310 &       146.7 &   72 & Blend with CH$_3$CH$_3$CO and $^{34}$SO$_2$ \\ 
 413 & 36$_{ 3,33}$--35$_{ 3,32}$ &  245~311.367 &   100 &  310 &       146.7 &   72 & Blend with C$_2$H$_5$OH and SO$_2$ \\ 
 414 & 36$_{ 4,33}$--35$_{ 3,32}$ &  245~335.158 &   100 &  310 &        52.6 &   72 & Strong SO$_2$ \\ 
 415 & 34$_{ 8,26}$--33$_{ 8,25}$ &  245~447.840 &    11 &  305 &       134.4 &   72 & Strong C$_2$H$_5$OH, C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1, and $^{13}$CH$_3$CH$_2$CN \\ 
 416 & 38$_{ 0,38}$--37$_{ 0,37}$$^\star$ &  245~779.482 &   100 &  314 &       158.3 &   53 & Strong CH$_2$$^{13}$CHCN and C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 \\ 
 418 & 38$_{ 0,38}$--37$_{ 1,37}$$^\star$ &  245~779.550 &    18 &  314 &        80.5 &   53 & Strong CH$_2$$^{13}$CHCN and C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 \\ 
 420 & 24$_{ 6,18}$--23$_{ 5,19}$ &  245~842.016 &    26 &  196 &        11.2 &   53 & Blend with C$_2$H$_3$CN, $\varv_{11}$ = 1/$\varv_{15}$ = 1 \\ 
\hline
 421 & 14$_{12, 2}$--13$_{11, 3}$$^\star$ &  247~059.416 &    14 &  162 &        25.4 &   68 & Strong CH$_3$OCHO \\ 
 423 & 14$_{12, 2}$--13$_{11, 2}$$^\star$ &  247~059.416 &    14 &  162 &         1.5 &   68 & Strong CH$_3$OCHO \\ 
 425 & 35$_{ 6,30}$--34$_{ 6,29}$ &  247~073.069 &   100 &  308 &       141.1 &   68 & Strong C$_2$H$_3$CN and CH$_2$$^{13}$CHCN \\ 
\hline
 426 & 39$_{ 0,39}$--38$_{ 0,38}$$^\star$ &  252~168.489 &   100 &  326 &       162.5 &   42 & Blend with C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 \\ 
 428 & 39$_{ 0,39}$--38$_{ 1,38}$$^\star$ &  252~168.541 &    18 &  326 &        82.7 &   42 & Blend with C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 \\ 
 430 & 24$_{ 7,17}$--23$_{ 6,18}$ &  252~254.714 &    16 &  199 &        16.0 &   42 & Strong CH$_{3}$OH \\ 
\hline
 431 & 25$_{ 7,19}$--24$_{ 6,18}$ &  254~026.124 &    15 &  207 &        16.1 &   32 & Strong CH$_3$OH in absorption, C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1, \\ 
 & & & & & & &  and HC$^{13}$CCN, $\varv_6$ = 1 \\ 
 432 & 15$_{12, 3}$--14$_{11, 4}$$^\star$ &  254~139.046 &    14 &  167 &        25.5 &   32 & Strong C$_2$H$_3$CN \\ 
 434 & 15$_{12, 3}$--14$_{11, 3}$$^\star$ &  254~139.046 &    14 &  167 &         1.5 &   32 & Strong C$_2$H$_3$CN \\ 
 \hline
 436 & 36$_{14,23}$--35$_{14,22}$$^\star$ &  255~232.834 &     8 &  368 &       127.8 &  217 & Strong CH$_3$OH \\ 
 438 & 17$_{11, 6}$--16$_{10, 7}$$^\star$ &  255~442.928 &    14 &  171 &        23.8 &  217 & Strong CH$_2$CH$^{13}$CN \\ 
 440 & 17$_{11, 6}$--16$_{10, 6}$$^\star$ &  255~442.928 &    14 &  171 &         1.4 &  217 & Strong CH$_2$CH$^{13}$CN \\ 
 442 & 36$_{13,24}$--35$_{13,23}$$^\star$ &  255~458.533 &     8 &  360 &       131.0 &  217 & Strong C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 and CH$_2$$^{13}$CHCN \\ 
 444 & 37$_{ 4,33}$--36$_{ 5,32}$ &  255~646.981 &     8 &  327 &        46.2 &  217 & Strong H$^{13}$CCCN and NH$_2$CHO, $\varv_{12}$ = 1 \\ 
\hline
 445 & 23$_{ 8,16}$--22$_{ 7,15}$ &  257~978.249 &    15 &  195 &        18.7 & 1127 & Strong CH$_3$CN, $\varv_8$ = 1 \\ 
 446 & 56$_{11,46}$--55$_{12,43}$ &  258~029.375 &    88 &  664 &        12.8 & 1127 & Strong CH$_3$CN, $\varv_8$ = 1 \\ 
 447 & 38$_{ 3,35}$--37$_{ 4,34}$ &  258~032.591 &     9 &  334 &        57.1 & 1127 & Strong CH$_3$CN, $\varv_8$ = 1 \\ 
 448 & 38$_{ 4,35}$--37$_{ 4,34}$ &  258~042.009 &     9 &  334 &       155.1 & 1127 & Strong CH$_3$CN, $\varv_8$ = 1 \\ 
 449 & 38$_{ 3,35}$--37$_{ 3,34}$ &  258~047.578 &     9 &  334 &       155.1 & 1127 & Strong CH$_3$CN, $\varv_8$ = 1 \\ 
 450 & 38$_{ 4,35}$--37$_{ 3,34}$ &  258~056.996 &     9 &  334 &        57.1 & 1127 & Strong CH$_3$CN, $\varv_8$ = 1 \\ 
 451 & 23$_{ 8,15}$--22$_{ 7,16}$ &  258~162.637 &    15 &  195 &        18.7 & 1127 & Strong $^{13}$CH$_3$OH and HC$^{15}$N \\ 
 452 & 36$_{ 9,27}$--35$_{ 9,26}$ &  258~237.747 &    10 &  334 &       141.2 & 1127 & Strong CH$_3$CN, $\varv_8$ = 1 and SO \\ 
 453 & 36$_{ 6,31}$--35$_{ 5,30}$ &  258~252.184 &    13 &  320 &        33.8 & 1127 & Strong CH$_3$CN, $\varv_8$ = 1 and SO \\ 
\hline
%&&&&&&& \\[-8pt]
 454 & 26$_{ 7,20}$--25$_{ 6,19}$ &  258~801.772 &    16 &  216 &        15.9 & 1609 & Strong CH$_3$$^{13}$CH$_2$CN \\ 
\hline
 455 & 37$_{ 6,32}$--36$_{ 6,31}$ &  260~009.847 &     8 &  332 &       149.4 &  413 & Strong C$_2$H$_5$OH, CH$_2$$^{13}$CHCN, and CH$_3$OCH$_3$ \\ 
 456 & 39$_{ 2,37}$--38$_{ 3,36}$ &  260~297.586 &    10 &  340 &        67.4 &  413 & Strong C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 \\ 
 457 & 39$_{ 3,37}$--38$_{ 3,36}$ &  260~297.819 &    10 &  340 &       160.2 &  413 & Strong C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 \\ 
 458 & 39$_{ 2,37}$--38$_{ 2,36}$ &  260~297.972 &    10 &  340 &       160.2 &  413 & Strong C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 \\ 
 459 & 39$_{ 3,37}$--38$_{ 2,36}$ &  260~298.205 &    10 &  340 &        67.4 &  413 & Strong C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 \\ 
\hline
%&&&&&&& \\[-8pt]
 460 & 37$_{ 7,31}$--36$_{ 7,30}$ &  263~345.617 &     9 &  337 &       148.6 &   74 & Blend with HCC$^{13}$CN, $\varv_7$ = 1 \\ 
 461 & 37$_{ 6,32}$--36$_{ 5,31}$ &  263~354.897 &    11 &  332 &        36.3 &   74 & Blend with NH$_2$CH$_2$CN \\ 
 462 & 37$_{11,27}$--36$_{11,26}$ &  263~432.848 &     8 &  358 &       141.1 &   74 & Strong HNCO, $\varv_5$ = 1 and HNCO \\ 
 463 & 37$_{11,26}$--36$_{11,25}$ &  263~445.456 &     8 &  358 &       141.2 &   74 & Strong HNCO, $\varv_5$ = 1 and HNCO \\ 
 464 & 20$_{10,11}$--19$_{ 9,10}$$^\star$ &  263~669.118 &    14 &  183 &        22.4 &  108 & Strong CH$_3$OCH$_3$, HNCO, and HC$^{13}$CCN, $\varv_7$ = 1 \\ 
 466 & 20$_{10,11}$--19$_{ 9,11}$$^\star$ &  263~669.145 &    14 &  183 &         1.4 &  108 & Strong CH$_3$OCH$_3$, HNCO, and HC$^{13}$CCN, $\varv_7$ = 1 \\ 
 468 & 36$_{ 7,29}$--35$_{ 7,28}$ &  264~087.850 &    11 &  326 &       145.6 &  108 & Blend with H$_2$$^{13}$CS and $U$-line \\ 
 469 & 37$_{10,28}$--36$_{10,27}$ &  264~094.028 &     9 &  351 &       143.5 &  108 & Blend with H$_2$$^{13}$CS and $U$-line \\ 
\hline
%&&&&&&& \\[-8pt]
 470 & 40$_{ 2,38}$--39$_{ 3,37}$ &  266~674.808 &    10 &  352 &        69.7 &   91 & Blend with O$^{13}$CS and C$_2$H$_5$$^{13}$CN \\ 
 471 & 40$_{ 3,38}$--39$_{ 3,37}$$^\star$ &  266~674.948 &    10 &  352 &       164.4 &   91 & Blend with O$^{13}$CS and C$_2$H$_5$$^{13}$CN \\ 
 473 & 40$_{ 3,38}$--39$_{ 2,37}$ &  266~675.181 &    10 &  352 &        69.7 &   91 & Blend with O$^{13}$CS and C$_2$H$_5$$^{13}$CN \\ 
 474 & 15$_{13, 2}$--14$_{12, 3}$$^\star$ &  266~949.479 &    14 &  174 &        27.6 &   91 & Blend with SO$_2$ and $U$-line \\ 
 476 & 15$_{13, 2}$--14$_{12, 2}$$^\star$ &  266~949.479 &    14 &  174 &         1.6 &   91 & Blend with SO$_2$ and $U$-line \\ 
 478 & 38$_{ 5,33}$--37$_{ 5,32}$ &  267~143.852 &   100 &  344 &       153.6 &   91 & Strong NH$_2$$^{13}$CHO, CH$_3$CH$_3$CO, and C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 \\ 
 \hline
 \end{tabular}
 \medskip
 Notes:
 $^a$~Numbering of the observed transitions associated with a modeled line stronger than 20~mK.
 $^b$~Transitions marked with a $^\star$ are double with a frequency difference less than 0.1~MHz. The quantum numbers of the second one are not shown.
 $^c$~Frequency uncertainty.
 $^d$~Lower energy level in temperature units~($E_{\rm l}/k_{\rm B}$).
 $^e$~Calculated rms noise level in $T_{{\rm mb}}$~scale.
 \end{table}