Table 2: Transitions of amino acetonitrile observed with the IRAM 30 m telescope toward Sgr B2(N). The horizontal lines mark discontinuities in the observed frequency coverage. All lines with $S\mu ^2$ < 20 D2 are not listed, since they are expected to be much too weak to be detectable with our sensitivity.
Na Transitionb Frequency Unc.c $E_{\rm l}$d $S\mu ^2$ $\sigma^e$ Comments
    (MHz) (kHz) (K) (D2) (mK)  
(1) (2) (3) (4) (5) (6) (7) (8)
1 9 0, 9-8 0, 8 80 947.479 7 16 60 33 Detected
2 9 2, 8-8 2, 7 81 535.184 6 21 57 18 Strong HC13CCN, v= 0
3 9 5, 5-8 5, 4$^\star$ 81 700.966 6 47 41 13 Group detected, partial blend with U-line
5 9 6, 3-8 6, 2$^\star$ 81 702.498 5 60 33 13 Group detected, partial blend with U-line
7 9 4, 6-8 4, 5$^\star$ 81 709.838 6 35 48 13 Group detected
9 9 7, 3-8 7, 2 81 709.848 6 76 24 13 Group detected
10 9 4, 5-8 4, 4 81 710.098 6 35 48 13 Group detected
11 9 3, 7-8 3, 6 81 733.892 6 27 53 13 Detected, blend with CH3OCH3 and HCC13CN, v6 = 1
12 9 3, 6-8 3, 5 81 756.174 6 27 53 13 Detected, blend with U-line
13 9 2, 7-8 2, 6 82 224.644 7 21 57 19 Detected, uncertain baseline
14 9 1, 8-8 1, 7 83 480.894 8 17 59 17 Blend with C2H3CN, v= 0
15 10 1,10-9 1, 9 88 240.541 8 20 66 19 Strong HNCO, v= 0 and HN13CO, v= 0
16 10 0,10-9 0, 9 89 770.285 7 19 66 18 Blend with U-line
17 10 2, 9-9 2, 8 90 561.332 6 25 64 20 Detected, blend with weak C2H5CN, v13 = 1/v21 = 1
18 10 6, 4-9 6, 3$^\star$ 90 783.538 6 64 43 14 Group detected, partial blend with CH2(OH)CHO and U-line
20 10 5, 6-9 5, 5$^\star$ 90 784.281 6 50 50 14 Group detected, partial blend with CH2(OH)CHO and U-line
22 10 7, 3-9 7, 2$^\star$ 90 790.259 6 80 34 14 Group detected, blend with U-line
24 10 4, 7-9 4, 6 90 798.685 6 39 56 14 Group detected, blend with U-line
25 10 4, 6-9 4, 5 90 799.249 6 39 56 14 Group detected, blend with U-line
26 10 8, 2-9 8, 1$^\star$ 90 801.896 7 98 24 14 Blend with U-line and HC13CCN, v7 = 1
28 10 3, 8-9 3, 7 90 829.945 6 31 60 14 Detected, blend with U-line also in M?
29 10 3, 7-9 3, 6 90 868.038 6 31 60 14 Detected, partial blend with U-line
30 10 2, 8-9 2, 7 91 496.108 8 25 64 24 Detected, partial blend with CH3CN, v4 = 1 and U-line
31 10 1, 9-9 1, 8 92 700.172 8 21 66 28 Blend with U-line and CH3OCH3
32 11 1,11-10 1,10 97 015.224 8 25 72 21 Detected, partial blend with C2H5OH and CH3OCHO
33 11 0,11-10 0,10 98 548.363 8 24 73 18 Blend with C2H5CN, v= 0
34 11 2,10-10 2, 9 99 577.063 7 29 71 19 Blend with CH3OCHO, $v_{{\rm t}}$ = 1
35 11 6, 6-10 6, 5$^\star$ 99 865.516 6 68 51 14 Strong blend with C2H5OH, CCS
37 11 5, 7-10 5, 6$^\star$ 99 869.306 6 55 58 14 Strong CH3OCHO, $v_{{\rm t}}$ = 1
39 11 7, 4-10 7, 3$^\star$ 99 871.151 6 84 43 14 Strong CH3OCHO, $v_{{\rm t}}$ = 1
41 11 8, 3-10 8, 2$^\star$ 99 882.826 7 103 34 14 Strong blend with C2H5CN, v13 = 1/v21 = 1
43 11 4, 8-10 4, 7 99 890.599 6 44 63 14 Strong blend with HC13CCN, v7 = 1 and HC13CCN, v6 = 1
44 11 4, 7-10 4, 6 99 891.725 6 44 63 14 Strong blend with HC13CCN, v6 = 1 and NH2CN
45 11 9, 2-10 9, 1$^\star$ 99 898.969 8 124 24 14 Strong HCC13CN, v6 = 1
47 11 3, 9-10 3, 8 99 928.886 6 35 68 14 Detected, partial blend with NH2CN and U-line
48 11 3, 8-10 3, 7 99 990.567 7 35 68 14 Detected
49 11 2, 9-10 2, 8 100 800.876 8 29 71 20 Detected, partial blend with CH3CH3CO, v= 0 and U-line
50 11 1,10-10 1, 9 101 899.795 8 26 72 34 Detected, uncertain baseline
51 12 1,12-11 1,11 105 777.991 8 29 79 43 Detected, blend with c-C2H4O and C2H5CN, v= 0
52 12 0,12-11 0,11 107 283.142 8 29 80 24 Detected, blend with C2H5OH and U-line
53 12 2,11-11 2,10 108 581.408 7 34 77 20 Detected, weak blend with C2H5OH
54 12 6, 7-11 6, 6$^\star$ 108 948.523 6 73 60 29 Blend with C2H5CN, v= 0 and C2H5OH
56 12 7, 5-11 7, 4$^\star$ 108 952.574 6 89 53 29 Blend with C2H5OH
58 12 5, 8-11 5, 7$^\star$ 108 956.206 6 60 66 29 Group detected, blend with C2H5OH
60 12 8, 4-11 8, 3$^\star$ 108 963.964 7 108 44 29 Strong blend with HC13CCN, v7 = 1
62 12 9, 3-11 9, 2$^\star$ 108 980.660 8 128 35 29 Strong blend with HCC13CN, v6 = 1
64 12 4, 9-11 4, 8 108 985.821 6 48 71 29 Blend with HCC13CN, v7 = 1
65 12 4, 8-11 4, 7 108 987.928 6 48 71 29 Blend with HCC13CN, v7 = 1
66 1210, 2-1110, 1$^\star$ 109 001.603 10 152 24 29 Weak
68 12 3,10-11 3, 9 109 030.225 6 40 75 29 Detected, partial blend with HC3N, v4 = 1, C2H5OH, and U-line
69 12 3, 9-11 3, 8 109 125.734 7 40 75 29 Strong HC13CCN, v7 = 1
70 12 2,10-11 2, 9 110 136.314 8 34 77 24 Blend with 13CH3OH, v= 0
71 12 1,11-11 1,10 111 076.901 8 31 79 25 Detected, slightly shifted?
72 13 1,13-12 1,12 114 528.654 8 34 86 37 Detected, partial blend with U-line
73 13 0,13-12 0,12 115 977.853 50 34 86 79 Blend with CH313CH2CN, v= 0, CH3CH3CO, and C2H5CN, v= 0
74 15 7, 9-14 7, 8$^\star$ 136 200.478 6 106 78 28 Strong HC13CCN, v7 = 1
76 15 6,10-14 6, 9$^\star$ 136 204.641 5 90 84 28 Strong HC13CCN, v7 = 1
78 15 8, 7-14 8, 6$^\star$ 136 208.805 7 125 71 28 Strong HC13CCN, v7 = 1 and HC13CCN, v6 = 1
80 15 9, 6-14 9, 5$^\star$ 136 225.653 8 145 64 28 Strong HCC13CN, v6 = 1 and HCC13CN, v7 = 1
82 15 5,11-14 5,10 136 229.823 5 77 89 28 Blend with HCC13CN, v7 = 1
83 15 5,10-14 5, 9 136 230.008 5 77 89 28 Blend with HCC13CN, v7 = 1
84 1510, 5-1410, 4$^\star$ 136 248.969 10 169 55 28 Group detected, blend with U-line
86 1511, 4-1411, 3$^\star$ 136 277.600 13 195 46 28 Strong HC3N, v4 = 1 and CH3OCHO
88 15 4,12-14 4,11 136 293.271 6 65 93 28 Strong CH313CH2CN
89 15 4,11-14 4,10 136 303.599 6 65 93 28 Detected, blend with a(CH2OH)2 and CH3C3N
90 1512, 3-1412, 2$^\star$ 136 310.849 16 223 36 28 Weak, blend with CH3C3N
92 15 3,13-14 3,12 136 341.155 6 57 96 28 Detected, partial blend with U-line also in M
93 1513, 2-1413, 1$^\star$ 136 348.271 21 253 25 28 Weak, blend with U-line
95 16 7, 9-15 7, 8$^\star$ 145 284.487 30 113 86 25 Strong HC13CCN, v7 = 1
97 16 8, 8-15 8, 7$^\star$ 145 290.958 30 131 80 25 Blend with HC13CCN, v6 = 1
99 16 6,11-15 6,10$^\star$ 145 292.688 30 97 91 25 Blend with HC13CCN, v6 = 1
101 16 9, 7-15 9, 6$^\star$ 145 307.254 30 152 73 25 Strong C2H5CN, v13 = 1/v21 = 1, HCC13CN, v7 = 1, C2H3CN, v15 = 1
103 16 5,12-15 5,11 145 325.871 30 83 96 25 Group detected, uncertain baseline, partial blend with
              C2H5CN, v13 = 1/v21 = 1
104 16 5,11-15 5,10 145 326.209 30 83 96 25 Group detected, uncertain baseline, partial blend with
              C2H5CN, v13 = 1/v21 = 1
105 1610, 6-1510, 5$^\star$ 145 330.985 40 175 65 25 Group detected, uncertain baseline
107 1611, 5-1511, 4$^\star$ 145 360.684 30 201 56 25 Strong HC3N, v4 = 1
109 1612, 4-1512, 3$^\star$ 145 395.485 60 229 46 25 Blend with C3H7CN
111 16 4,13-15 4,12 145 403.421 30 72 100 25 Blend with U-line or wing of C2H5CN, v= 0
112 16 4,12-15 4,11 145 419.704 30 72 100 25 Strong C2H5CN, v= 0
113 1613, 3-1513, 2$^\star$ 145 434.928 60 260 36 25 Weak, blend with U-line
115 16 3,14-15 3,13 145 443.850 30 63 103 25 Detected, blend with C2H5CN, v= 0 and U-line
116 1614, 2-1514, 1$^\star$ 145 478.462 60 293 25 25 Weak, strong O13CS
118 16 1,15-15 1,14 147 495.789 6 55 106 31 Detected, partial blend with H3C13CN, v8 = 1
119 16 2,14-15 2,13 147 675.839 30 58 105 31 Blend with H3C13CN, v8 = 1, U-line, and CH3OCHO
120 17 7,10-16 7, 9$^\star$ 154 369.232 40 120 94 112 Strong HC13CCN, v7 = 1 and HC13CCN, v6 = 1
122 17 8, 9-16 8, 8$^\star$ 154 373.384 40 138 88 112 Strong HC13CCN, v6 = 1
124 17 6,12-16 6,11$^\star$ 154 382.222 40 104 99 112 Strong HCC13CN, v6 = 1 and HCC13CN, v7 = 1
126 17 9, 8-16 9, 7$^\star$ 154 388.904 40 159 81 112 Strong HCC13CN, v7 = 1
128 1710, 7-1610, 6$^\star$ 154 412.758 50 182 74 112 Strong HNCO, v= 0
130 17 5,13-16 5,12 154 424.604 40 90 103 112 Strong CH3OH, v= 0
131 17 5,12-16 5,11 154 425.216 40 90 103 112 Strong CH3OH, v= 0
132 1711, 6-1611, 5$^\star$ 154 443.330 60 208 66 112 Strong HC3N, v4 = 1 and CH313CH2CN
134 1712, 5-1612, 4$^\star$ 154 479.566 15 236 57 112 Strong C2H5CN, v= 0
136 17 4,14-16 4,13 154 517.470 5 79 107 112 Blend with C2H5CN, v13 = 1/v21 = 1
137 1713, 4-1613, 3$^\star$ 154 520.861 19 267 47 112 Blend with C2H5CN, v13 = 1/v21 = 1
139 17 4,13-16 4,12 154 542.406 5 79 107 112 Group detected, blend with U-line
140 17 3,15-16 3,14 154 544.046 5 70 109 112 Group detected, blend with U-line
141 1714, 3-1614, 2$^\star$ 154 566.773 25 300 36 112 Weak, strong U-line
143 1715, 2-1615, 1$^\star$ 154 617.004 33 335 25 112 Weak, strong U-line and C2H5CN, v13 = 1/v21 = 1
145 18 7,12-17 7,11$^\star$ 163 454.794 5 127 101 38 Group detected, partial blend with HC13CCN, v6 = 1
              and HCC13CN, v6 = 1
147 18 8,10-17 8, 9$^\star$ 163 456.136 6 146 96 38 Group detected, partial blend with HC13CCN, v6 = 1
              and HCC13CN, v6 = 1
149 18 9, 9-17 9, 8$^\star$ 163 470.472 8 166 90 38 Group detected, partial blend with HCC13CN,v7 = 1
151 18 6,13-17 6,12$^\star$ 163 473.305 5 111 106 38 Group detected, partial blend with HCC13CN,v7 = 1
153 1810, 8-1710, 7$^\star$ 163 494.265 9 190 83 38 Strong CH313CH2CN
155 1811, 7-1711, 6$^\star$ 163 525.533 11 216 75 38 Group detected, blend with HC3N, v4 = 1
157 18 5,14-17 5,13 163 526.183 4 97 110 38 Group detected, blend with HC3N, v4 = 1
158 18 5,13-17 5,12 163 527.171 4 97 110 38 Group detected, blend with HC3N, v4 = 1
159 1812, 6-1712, 5$^\star$ 163 563.084 14 244 66 38 Blend with C2H3CN, v15 = 2 and SO2, v= 0
161 1813, 5-1713, 4$^\star$ 163 606.161 18 274 57 38 Strong SO2, v= 0
163 18 4,15-17 4,14 163 635.326 5 86 114 38 Detected, partial blend with C3H7CN
164 18 3,16-17 3,15 163 640.468 5 78 116 38 Detected, partial blend with C3H7CN
165 1814, 4-1714, 3$^\star$ 163 654.261 24 307 47 38 Weak, blend with H13CONH2, v= 0
167 18 4,14-17 4,13 163 672.524 5 86 114 38 Strong C2H5CN, v13 = 1/v21 = 1
168 1815, 3-1715, 2$^\star$ 163 707.031 32 343 37 38 Weak, blend with CH2(OH)CHO
170 18 2,16-17 2,15 166 463.884 30 72 118 66 Blend with 13CH2CHCN
171 19 8,12-18 8,11$^\star$ 172 539.195 40 153 104 44 Strong HCC13CN, v6 = 1
173 19 7,13-18 7,12$^\star$ 172 541.207 40 135 109 44 Strong HCC13CN, v6 = 1
175 19 9,10-18 9, 9$^\star$ 172 552.010 40 174 98 44 Strong HCC13CN, v7 = 1
177 19 6,14-18 6,13$^\star$ 172 566.092 50 119 114 44 Group detected, partial blend with U-line and HCC13CN, v7 = 1
179 1910, 9-1810, 8$^\star$ 172 575.485 50 198 91 44 Strong U-line
181 1911, 8-1811, 7$^\star$ 172 607.260 60 223 84 44 Strong HC3N, v4 = 1
183 19 5,15-18 5,14 172 630.750 30 105 117 44 Strong U-line and t-HCOOH
184 19 5,14-18 5,13 172 632.382 30 105 117 44 Strong U-line and t-HCOOH
185 1912, 7-1812, 6$^\star$ 172 645.994 13 252 76 44 Blend with t-HCOOH, H13CN, and U-line
187 1913, 6-1813, 5$^\star$ 172 690.745 17 282 67 44 Strong H13CN and CH3OCHO
189 19 3,17-18 3,16 172 731.699 30 86 123 44 Blend with U-line and C2H3CN, v= 0
190 1914, 5-1814, 4$^\star$ 172 740.945 23 315 58 44 Strong C2H3CN, v= 0
192 19 4,16-18 4,15 172 756.821 30 94 121 44 Baseline problem?
193 1915, 4-1815, 3$^\star$ 172 796.183 30 351 48 44 Weak, strong HCC13CN, v7 = 1
195 19 4,15-18 4,14 172 811.041 30 94 121 44 Strong C2H5CN, v= 0
196 1916, 3-1816, 2$^\star$ 172 856.161 40 388 37 44 Weak, strong HC3N, v= 0 and HC3N, v5 = 1/v7 = 3
198 20 0,20-19 0,19 176 174.096 30 81 132 365 Noisy, partial blend with HNCO, v5 = 1 and U-line
199 23 0,23-22 0,22 201 875.876 10 108 152 138 Strong 13CH3CH2CN, v= 0
200 22 2,20-21 2,19 203 812.341 10 107 145 364 Strong C2H3CN, v= 0
201 23 2,22-22 2,21 206 652.454 9 115 151 106 Blend with C2H5CN, v= 0
202 23 8,16-22 8,15$^\star$ 208 875.040 8 189 134 160 Blend with HCC13CN, v7 = 1, CH3CH3CO, $v_{{\rm t}}$ = 1, and CH3OCHO
204 23 9,14-22 9,13$^\star$ 208 877.860 9 210 129 160 Blend with HCC13CN, v7 = 1, CH3CH3CO, $v_{{\rm t}}$ = 1, and CH3OCHO
206 23 7,17-22 7,16$^\star$ 208 896.163 7 171 139 160 Strong C2H3CN, v= 0
208 2310,13-2210,12$^\star$ 208 897.241 10 233 124 160 Strong C2H3CN, v= 0
210 2311,12-2211,11$^\star$ 208 929.064 10 259 118 160 Strong C2H3CN, v= 0
212 23 6,18-22 6,17 208 955.555 6 155 142 160 Blend with C2H3CN, v= 0 and U-line
213 23 6,17-22 6,16 208 955.797 6 155 142 160 Blend with C2H3CN, v= 0 and U-line
214 2312,11-2212,10$^\star$ 208 970.868 11 287 111 160 Strong C2H3CN, v= 0
216 23 3,21-22 3,20 209 015.508 7 121 150 160 Strong C2H5CN, v= 0 and C2H3CN, v= 0
217 2313,10-2213, 9$^\star$ 209 021.101 13 318 104 160 Strong C2H3CN, v= 0
219 2314, 9-2214, 8$^\star$ 209 078.736 16 351 96 160 Strong C2H3CN, v= 0
221 23 5,19-22 5,18 209 081.032 6 141 146 160 Strong C2H3CN, v= 0
222 23 5,18-22 5,17 209 090.124 6 141 146 160 Strong C2H3CN, v= 0
223 2315, 8-2215, 7$^\star$ 209 143.066 23 386 88 160 Weak, strong HC13CCN, v7 = 1
225 2316, 7-2216, 6$^\star$ 209 213.584 33 424 79 58 Weak, strong H2CS and C2H3CN, v15 = 1
227 23 4,20-22 4,19 209 272.189 6 130 148 58 Detected, blend CH3CH3CO, v= 0
228 2317, 6-2217, 5$^\star$ 209 289.914 46 464 69 58 Weak, blend with C2H5CN, v13 = 1/v21 = 1 and C2H3CN, v15 = 1
230 2318, 5-2218, 4$^\star$ 209 371.766 64 507 59 58 Weak, blend with C2H5OH
232 2319, 4-2219, 3$^\star$ 209 458.910 86 552 49 58 Weak, strong C2H3CN, v15 = 2 and C2H5CN, v= 0
234 23 4,19-22 4,18 209 473.790 7 130 148 58 Strong C2H3CN, v15 = 2 and CH3OCHO
235 2320, 3-2220, 2$^\star$ 209 551.156 114 599 37 58 Weak, strong C2H3CN, v11 = 1
237 23 1,22-22 1,21 209 629.913 9 113 152 45 Detected, blend with HC13CCN, v7 = 2 and HCC13CN, v7 = 2
238 2321, 2-2221, 1$^\star$ 209 648.342 146 649 25 45 Weak, blend with U-line and C2H3CN, v11 = 1
240 24 1,24-23 1,23 210 072.793 12 118 159 45 Blend with C2H5CN, v13 = 1/v21 = 1 and 13CH3CH2CN, v= 0
241 24 0,24-23 0,23 210 448.044 12 118 159 64 Strong CH3OCHO
242 23 3,20-22 3,19 211 099.150 12 122 150 33 Blend with U-lines
243 23 2,21-22 2,20 213 074.653 70 117 152 48 Strong SO2, v= 0
244 24 2,23-23 2,22 215 466.138 10 124 158 74 Strong C2H5CN, v13 = 1/v21 = 1
245 24 3,21-23 3,20 220 537.064 14 132 157 98 Strong CH3CN, v8 = 0
246 25 1,24-24 1,23 226 957.428 40 134 165 96 Strong CN absorption
247 25 9,16-24 9,15$^\star$ 227 040.487 50 230 145 96 Group detected, partial blend with CN absorption and
              CH3CH3CO, $v_{{\rm t}}$ = 1
249 25 8,18-24 8,17$^\star$ 227 045.287 50 210 149 96 Group detected, partial blend with CN absorption and
              CH3CH3CO, $v_{{\rm t}}$ = 1
251 2510,15-2410,14$^\star$ 227 055.944 50 254 139 96 Group detected, partial blend with CN absorption
253 25 7,19-24 7,18$^\star$ 227 079.847 50 191 153 96 Group detected, blend with CH2CH13CN and CH3OH, v= 0
255 2511,14-2411,13$^\star$ 227 086.424 50 280 134 96 Blend with CH2CH13CN and CH3OH, v= 0
257 25 3,23-24 3,22 227 088.938 40 142 164 96 Blend with CH2CH13CN and CH3OH, v= 0
258 2512,13-2412,12$^\star$ 227 128.728 60 308 128 96 Blend with C2H5CN, v= 0 and C2H3CN, v= 0
260 2517, 8-2417, 7$^\star$ 227 467.235 45 485 89 85 Weak, blend with CH2(OH)CHO, CH2CH13CN and
              t-C2H5OCHO
262 25 4,22-24 4,21 227 539.318 40 151 162 85 Strong HCONH2, v12 = 1 and C2H5CN, v= 0
263 2518, 7-2418, 6$^\star$ 227 555.295 63 528 80 85 Weak, strong CH3OCHO
265 26 0,26-25 0,25 227 601.595 16 138 172 85 Strong HCONH2, v= 0
266 2519, 6-2419, 5$^\star$ 227 649.239 85 572 70 85 Weak, blend with CH3OCH3
268 2520, 5-2420, 4$^\star$ 227 748.834 113 620 60 85 Weak, blend with 13CH3CH2CN, v= 0
270 2521, 4-2421, 3$^\star$ 227 853.885 147 669 49 85 Weak, strong HC13CCN, v7 = 2 and HCC13CN, v7 = 2
272 25 4,21-24 4,20 227 892.614 60 151 162 85 Strong HCC13CN, v7 = 2, C2H5OH, and HC13CCN, v7 = 2
273 25 2,23-24 2,22 231 485.527 50 138 165 40 Detected, blend with U-line?
274 26 1,25-25 1,24 235 562.532 50 145 172 131 Strong C2H3CN, v= 0
275 27 1,27-26 1,26 235 964.814 19 149 179 131 Strong 13CH3OH, v= 0
276 26 3,24-25 3,23 236 103.949 40 153 170 37 Blend with HCC13CN, v7 = 1 and C2H5CN, v13 = 1/v21 = 1
277 26 9,17-25 9,16$^\star$ 236 121.689 50 241 152 37 Blend with 13CH3CH2CN
279 26 8,19-25 8,18$^\star$ 236 131.044 50 220 156 37 Blend with CH213CHCN
281 2610,16-2510,15$^\star$ 236 134.730 50 265 147 37 Blend with CH213CHCN
283 2611,15-2511,14$^\star$ 236 164.129 60 291 142 37 Strong C2H3CN, v11 = 1 and 13CH3CH2CN, v= 0
285 26 7,20-25 7,19$^\star$ 236 173.437 60 202 160 37 Blend with C2H3CN, v11 = 1, CH213CHCN, and
              13CH3CH2CN, v= 0
287 27 0,27-26 0,26 236 182.602 18 149 179 37 Blend with CH213CHCN, 13CH3CH2CN, v= 0, and HC3N, v4 = 1
288 2612,14-2512,13$^\star$ 236 206.427 19 319 136 37 Strong SO2, v= 0
290 2613,13-2513,12$^\star$ 236 259.339 21 349 130 37 Blend with C2H5CN, v13 = 1/v21 = 1 and t-C2H5OCHO
292 26 6,21-25 6,20 236 269.491 60 186 163 37 Group detected, partial blend with t-C2H5OCHO and U-line
293 26 6,20-25 6,19 236 270.459 60 186 163 37 Group detected, partial blend with t-C2H5OCHO and U-line
294 2614,12-2514,11$^\star$ 236 321.411 23 382 123 37 Weak, blend with C2H5OH and CH313CH2CN, v= 0
296 2615,11-2515,10$^\star$ 236 391.638 27 418 115 37 Weak, blend with CH213CHCN
298 26 5,22-25 5,21 236 454.502 40 173 166 37 Blend with SO, v= 0 and 13CH3CH2CN, v= 0, baseline problem?
299 2616,10-2516, 9$^\star$ 236 469.303 35 456 107 37 Weak, blend with CH2CH13CN
301 26 5,21-25 5,20 236 481.643 40 173 166 37 Blend with CH213CHCN
302 2617, 9-2517, 8$^\star$ 236 553.897 80 496 99 37 Weak, blend with t-C2H5OCHO, 13CH3CH2CN, v= 0, and
              CH3COOH, $v_{{\rm t}}$ = 0
304 27 1,26-26 1,25 244 135.969 14 156 178 46 Blend with C2H5CN, v13 = 1/v21 = 1
305 28 1,28-27 1,27 244 585.841 21 161 186 39 Strong CH3OCHO and HCC13CN, v= 0
306 28 0,28-27 0,27 244 765.968 21 160 186 39 Detected, blend with CH313CH2CN, v= 0 and U-line
307 27 3,25-26 3,24 245 102.984 11 164 177 72 Blend with 13CH3CH2CN, v= 0
308 27 9,18-26 9,17$^\star$ 245 202.855 16 253 159 72 Blend with 13CH3CH2CN, v= 0 and U-line?
310 2710,17-2610,16$^\star$ 245 213.055 19 276 155 72 Strong CH3OH, v= 0
312 27 8,20-26 8,19$^\star$ 245 217.230 13 232 164 72 Strong CH3OH, v= 0
314 2711,16-2611,15$^\star$ 245 241.163 21 302 150 72 Blend with C2H513CN, v= 0 and C2H3CN, v15 = 1
316 27 7,21-26 7,20$^\star$ 245 268.168 11 213 167 72 Blend with HC3N, v4 = 1
318 2712,15-2612,14$^\star$ 245 283.214 24 330 144 72 Blend with C2H513CN, v= 0
320 2713,14-2613,13$^\star$ 245 336.715 26 361 138 72 Strong SO2, v= 0
322 27 6,22-26 6,21 245 378.722 10 197 170 72 Group detected, blend with 13CH3CH2CN, v= 0?
323 27 6,21-26 6,20 245 380.146 10 197 170 72 Group detected, blend with 13CH3CH2CN, v= 0?
324 2714,13-2614,12$^\star$ 245 400.026 29 394 131 72 Blend with U-line, CH3CH3CO, v= 0 and 13CH3CH2CN, v= 0?
326 2715,12-2615,11$^\star$ 245 472.024 33 429 124 72 Weak, strong C2H5CN, v13 = 1/v21 = 1 and C2H3CN, v11 = 1
328 2716,11-2616,10$^\star$ 245 551.911 40 467 116 53 Weak, blend with SO2, v= 0
330 27 5,23-26 5,22 245 585.766 10 184 173 53 Strong CH213CHCN and HC3N, v= 0
331 27 5,22-26 5,21 245 623.711 10 184 173 53 Strong HC3N, v5 = 1/v7 = 3 and CH213CHCN
332 2717,10-2617, 9$^\star$ 245 639.099 51 507 108 53 Weak, blend with C2H3CN, v15 = 2
334 2718, 9-2618, 8$^\star$ 245 733.144 67 550 100 53 Weak, strong HNCO, v5 = 1
336 27 4,24-26 4,23 245 803.548 10 173 175 53 Blend with CH2CH13CN
337 2719, 8-2619, 7$^\star$ 245 833.697 88 595 91 53 Weak, strong U-line, partial blend with CH2CH13CN and
              C2H3CN, v11 = 1/v15 = 1
339 2720, 7-2620, 6$^\star$ 245 940.476 116 642 81 53 Weak, strong U-line and CH3OCHO, $v_{{\rm t}}$ = 1
341 2721, 6-2621, 5$^\star$ 246 053.247 150 692 71 53 Weak, strong CH3OCHO
343 28 3,26-27 3,25 254 085.051 12 176 184 32 Blend with CH3CH3CO, v= 0 and C2H5CN, v= 0
344 28 9,19-27 9,18$^\star$ 254 283.930 19 264 167 32 Strong SO2, v= 0 and 13CH3OH, v= 0
346 2810,18-2710,17$^\star$ 254 290.939 22 288 162 32 Strong SO2, v= 0, 13CH3OH, v= 0, 13CH2CHCN,
              13CH3CH2CN, v= 0, and H13CONH2, v12 = 1
348 28 8,21-27 8,20$^\star$ 254 303.873 15 244 171 32 Blend with 13CH3CH2CN, v= 0 and C2H5CN, v= 0
350 2811,17-2711,16$^\star$ 254 317.460 26 314 157 32 Strong C2H5CN, v= 0 and 13CH3OH, v= 0
352 2812,16-2712,15$^\star$ 254 359.074 29 342 152 32 Blend with H13CONH2, v= 0
354 28 7,22-27 7,21$^\star$ 254 364.160 12 225 174 32 Blend with H13CONH2, v= 0
356 2813,15-2713,14$^\star$ 254 413.004 32 372 146 32 Strong C2H5CN, v= 0, H13CONH2, v= 0, and CH3OH, v= 0
358 2822, 6-2722, 5$^\star$ 255 273.081 196 755 71 217 Weak, strong 13CH3OH, v= 0 and CH2CH13CN
360 2823, 5-2723, 4$^\star$ 255 401.564 245 809 60 217 Weak, blend with CH3CH3CO, $v_{{\rm t}}$ = 1
362 2824, 4-2724, 3$^\star$ 255 535.733 304 866 49 217 Weak, blend with SO2, v= 0 and U-line?
364 28 4,24-27 4,23 255 674.369 18 185 182 217 Strong HC3N, v7 = 1
365 2825, 3-2725, 2$^\star$ 255 675.432 372 925 38 217 Strong HC3N, v7 = 1
367 28 2,26-27 2,25 258 775.885 19 172 185 1609 Weak, blend with CH3OH, v= 0
368 29 9,20-28 9,19$^\star$ 263 364.923 22 277 174 74 Group detected, baseline problem?, blend with U-line
370 2910,19-2810,18$^\star$ 263 368.355 26 300 170 74 Group detected, baseline problem?, blend with U-line
372 29 8,22-28 8,21$^\star$ 263 390.982 17 256 178 74 Blend with HNCO, v4 = 1 and CH3OCH3
374 2911,18-2811,17$^\star$ 263 393.008 31 326 165 74 Blend with HNCO, v4 = 1 and CH3OCH3
376 2912,17-2812,16$^\star$ 263 433.971 35 354 160 74 Strong HC3N, v4 = 1, HNCO, v5 = 1, and HNCO, v= 0
378 29 7,23-28 7,22$^\star$ 263 461.436 14 237 181 74 Blend with HNCO, v= 0, CH3CH3CO, v= 0 and C2H5OH
380 2913,16-2813,15$^\star$ 263 488.164 40 385 154 74 Blend with C2H513CN, v= 0
382 2914,15-2814,14$^\star$ 263 553.566 44 418 148 74 Strong SO2, v= 0, HCONH2, v12 = 1, and CH2(OH)CHO
384 29 6,24-28 6,23 263 604.573 12 221 184 74 Group detected, baseline problem?, partial blend with
              CH3CH3CO, $v_{{\rm t}}$ = 1 and CH3OCH3
385 29 6,23-28 6,22 263 607.689 12 221 184 74 Group detected, baseline problem?, partial blend with
              CH3CH3CO, $v_{{\rm t}}$ = 1 and CH3OCH3
386 2915,14-2815,13$^\star$ 263 628.792 50 453 141 74 Strong CH3OCH3
388 2916,13-2816,12$^\star$ 263 712.865 57 491 134 108 Weak, strong HCC13CN, v7 = 1 and HNCO, v6 = 1
390 2917,12-2817,11$^\star$ 263 805.068 67 531 126 108 Weak, strong HC3N, v5 = 1/v7 = 3 and C2H5CN, v= 0
392 29 5,25-28 5,24 263 857.842 12 208 187 108 Blend with HCONH2, v= 0 and C2H513CN, v= 0
393 2918,11-2818,10$^\star$ 263 904.858 81 574 118 108 Weak, blend with SO2, v= 0, C2H5CN, v13 = 1/v21 = 1, and U-line?
395 29 5,24-28 5,23 263 928.994 13 208 187 108 Blend with C2H5CN, v13 = 1/v21 = 1 and C2H5CN, v= 0
396 2919,10-2819, 9$^\star$ 264 011.816 101 619 110 108 Weak, strong CH313CH2CN, v= 0
398 29 4,26-28 4,25 264 055.836 13 197 189 108 Detected, partial blend with C2H5CN, v= 0 and
              CH3CH3CO, v= 0
a Numbering of the observed transitions with $S\mu ^2$ > 20 D2.
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.

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