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Table 2

Physical conditions of COMs from MCMC sampling.

COM Component Tex (K) log Ntot (cm−2) ΔV (km s−1) VLSR (km s−1) D (diameter) (arcsec) Ntot × area(a) (cm−2 arcsec2) NXNCH3OH${{{N_{\rm{X}}}} \over {{N_{{\rm{C}}{{\rm{H}}_3}{\rm{OH}}}}}}$ (b) [ X ][ CH3OH ]${{\left[ {\rm{X}} \right]} \over {\left[ {{\rm{C}}{{\rm{H}}_3}{\rm{OH}}} \right]}}$ (c)
CH3OH Single 229.30.64+0.72$229.3_{ - 0.64}^{ + 0.72}$ 18.90.01+0.01$18.9_{ - 0.01}^{ + 0.01}$ 3.120.01+0.01$3.12_{ - 0.01}^{ + 0.01}$ 8.050.01+0.01$8.05_{ - 0.01}^{ + 0.01}$ 0.2790.001+0.001$0.279_{ - 0.001}^{ + 0.001}$ 1.950.01+0.01×1018$1.95_{ - 0.01}^{ + 0.01} \times {10^{18}}$ 1 1
aGgʹ-(CH2OH)2 Single 240.613.15+14.0$240.6_{ - 13.15}^{ + 14.0}$ 18.170.04+0.04$18.17_{ - 0.04}^{ + 0.04}$ 3.850.06+0.06$3.85_{ - 0.06}^{ + 0.06}$ 7.550.02+0.02$7.55_{ - 0.02}^{ + 0.02}$ 0.10.003+0.033$0.1_{ - 0.003}^{ + 0.033}$ 4.690.53+0.03×1016$4.69_{ - 0.53}^{ + 0.03} \times {10^{16}}$ 0.186 0.024

aGgʹ-(CH2OH)2 Comp 1 278.746.59+62.06$278.7_{ - 46.59}^{ + 62.06}$ 18.050.16+0.18$18.05_{ - 0.16}^{ + 0.18}$ 1.480.07+0.07$1.48_{ - 0.07}^{ + 0.07}$ 5.680.08+0.08$5.68_{ - 0.08}^{ + 0.08}$ 0.0570.006+0.006$0.057_{ - 0.006}^{ + 0.006}$ 1.160.54+0.04×1016$1.16_{ - 0.54}^{ + 0.04} \times {10^{16}}$ 0.036
Comp 2 184.91528+16.46$184.9_{ - 1528}^{ + 16.46}$ 17.680.08+0.07$17.68_{ - 0.08}^{ + 0.07}$ 2.50.13+0.12$2.5_{ - 0.13}^{ + 0.12}$ 8.160.05+0.05$8.16_{ - 0.05}^{ + 0.05}$ 0.1120.005+0.005$0.112_{ - 0.005}^{ + 0.005}$ 1.890.38+0.38×1016$1.89_{ - 0.38}^{ + 0.38} \times {10^{16}}$
Comp 3 471.4118.9+201.4$471.4_{ - 118.9}^{ + 201.4}$ 19.220.28+0.36$19.22_{ - 0.28}^{ + 0.36}$ 6.030.42+0.46$6.03_{ - 0.42}^{ + 0.46}$ 7.520.17+0.2$7.52_{ - 0.17}^{ + 0.2}$ 0.0270.006+0.006$0.027_{ - 0.006}^{ + 0.006}$ 3.923.72+3.72×1016$3.92_{ - 3.72}^{ + 3.72} \times {10^{16}}$

C2 H5OH Single 97.531.74+1.81$97.53_{ - 1.74}^{ + 1.81}$ 17.440.02+0.02$17.44_{ - 0.02}^{ + 0.02}$ 3.880.04+0.04$3.88_{ - 0.04}^{ + 0.04}$ 8.240.02+0.02$8.24_{ - 0.02}^{ + 0.02}$ 0.2540.004+0.005$0.254_{ - 0.004}^{ + 0.005}$ 5.560.37+0.37×1016$5.56_{ - 0.37}^{ + 0.37} \times {10^{16}}$ 0.035 0.029

C2 H5OH Comp 1 87.032.76+2.75${87.03_{ - 2.76}^{ + 2.75}}$ 17.30.04+0.04${17.3_{ - 0.04}^{ + 0.04}}$ 3.120.11+0.12${3.12_{ - 0.11}^{ + 0.12}}$ 7.530.1+0.1${7.53_{ - 0.1}^{ + 0.1}}$ 0.2330.08+0.008${0.233_{ - 0.08}^{ + 0.008}}$ 3.40.37+0.37×1016${3.4_{ - 0.37}^{ + 0.37} \times {{10}^{16}}}$ 0.032
Comp 2 142.715.36+24.51$142.7_{ - 15.36}^{ + 24.51}$ 17.70.14+0.19${17.7_{ - 0.14}^{ + 0.19}}$ 2.750.13+0.16${2.75_{ - 0.13}^{ + 0.16}}$ 9.720.1+0.1${9.72_{ - 0.1}^{ + 0.1}}$ 0.1340.021+0.019${0.134_{ - 0.021}^{ + 0.019}}$ 2.841.52+1.52×1016${2.84_{ - 1.52}^{ + 1.52} \times {{10}^{16}}}$

CH2(OH)CHO Single 151.92.97+2.4$151.9_{ - 2.97}^{ + 2.4}$ 16.860.36+0.29$16.86_{ - 0.36}^{ + 0.29}$ 4.490.12+0.12$4.49_{ - 0.12}^{ + 0.12}$ 7.040.04+0.04$7.04_{ - 0.04}^{ + 0.04}$ 0.2680.072+0.132$0.268_{ - 0.072}^{ + 0.132}$ 1.642.11+2.11×1016$1.64_{ - 2.11}^{ + 2.11} \times {10^{16}}$ 0.009 0.008

CH2(OH)CHO Comp 1 115.320.18+31.2${115.3_{ - 20.18}^{ + 31.2}}$ 17.430.27+0.22${17.43_{ - 0.27}^{ + 0.22}}$ 0.810.13+0.18${0.81_{ - 0.13}^{ + 0.18}}$ 6.220.06+0.07${6.22_{ - 0.06}^{ + 0.07}}$ 0.070.009+0.011${0.07_{ - 0.009}^{ + 0.011}}$ 4.092.84+2.24×1015${4.09_{ - 2.84}^{ + 2.24} \times {{10}^{15}}}$ 0.010
Comp 2 134.844.95+109.8$134.8_{ - 44.95}^{ + 109.8}$ 15.580.58+0.75$15.58_{ - 0.58}^{ + 0.75}$ 0.680.27+1.93$0.68_{ - 0.27}^{ + 1.93}$ 8.090.11+0.36$8.09_{ - 0.11}^{ + 0.36}$ 0.1550.08+0.097$0.155_{ - 0.08}^{ + 0.097}$ 2.886.16+6.16×1014$2.88_{ - 6.16}^{ + 6.16} \times {10^{14}}$
Comp 3 149.73.79+3.74${149.7_{ - 3.79}^{ + 3.74}}$ 16.980.19+0.24${16.98_{ - 0.19}^{ + 0.24}}$ 4.780.17+0.18${4.78_{ - 0.17}^{ + 0.18}}$ 7.180.07+0.07$7.18_{ - 0.07}^{ + 0.07}$ 0.2230.05+0.051$0.223_{ - 0.05}^{ + 0.051}$ 1.491.07+1.07×1016$1.49_{ - 1.07}^{ + 1.07} \times {10^{16}}$

CH3CHO Single 154.61.25+1.33$154.6_{ - 1.25}^{ + 1.33}$ 17.120.01+0.01$17.12_{ - 0.01}^{ + 0.01}$ 3.410.02+0.01$3.41_{ - 0.02}^{ + 0.01}$ 7.760.01+0.01$7.76_{ - 0.01}^{ + 0.01}$ 0.2520.002+0.002$0.252_{ - 0.002}^{ + 0.002}$ 2.620.06+0.06×1016$2.62_{ - 0.06}^{ + 0.06} \times {10^{16}}$ 0.017 0.013

CH3CHO Comp 1 143.34.99+5.38$143.3_{ - 4.99}^{ + 5.38}$ 16.830.04+0.04$16.83_{ - 0.04}^{ + 0.04}$ 0.990.04+0.04$0.99_{ - 0.04}^{ + 0.04}$ 6.740.02+0.02$6.74_{ - 0.02}^{ + 0.02}$ 0.160.008+0.007$0.16_{ - 0.008}^{ + 0.007}$ 5.420.74+0.74×1015$5.42_{ - 0.74}^{ + 0.74} \times {10^{15}}$ 0.019
Comp 2 105.410.74+12.32$105.4_{ - 10.74}^{ + 12.32}$ 16.220.1+0.08$16.22_{ - 0.1}^{ + 0.08}$ 0.50.03+0.03$0.5_{ - 0.03}^{ + 0.03}$ 7.950.01+0.01$7.95_{ - 0.01}^{ + 0.01}$ 0.1270.007+0.008$0.127_{ - 0.007}^{ + 0.008}$ 8.42.13+2.13×1014$8.4_{ - 2.13}^{ + 2.13} \times {10^{14}}$
Comp 3 116.52.63+2.58${116.5_{ - 2.63}^{ + 2.58}}$ 16.730.03+0.03${16.73_{ - 0.03}^{ + 0.03}}$ 2.290.06+0.06${2.29_{ - 0.06}^{ + 0.06}}$ 8.430.04+0.04${8.43_{ - 0.04}^{ + 0.04}}$ 0.2420.004+0.004${0.242_{ - 0.004}^{ + 0.004}}$ 9.910.84+0.84×1015$9.91_{ - 0.84}^{ + 0.84} \times {10^{15}}$
Comp 4 133.910.87+12.2${133.9_{ - 10.87}^{ + 12.2}}$ 16.580.05+0.05${16.58_{ - 0.05}^{ + 0.05}}$ 0.80.04+0.04${0.8_{ - 0.04}^{ + 0.04}}$ 5.510.03+0.03${5.51_{ - 0.03}^{ + 0.03}}$ 0.1230.005+0.005${0.123_{ - 0.005}^{ + 0.005}}$ 1.80.27+0.27×1015$1.8_{ - 0.27}^{ + 0.27} \times {10^{15}}$
Comp 5 182.010.85+11.99${182.0_{ - 10.85}^{ + 11.99}}$ 18.090.07+0.07${18.09_{ - 0.07}^{ + 0.07}}$ 5.140.16+0.17${5.14_{ - 0.16}^{ + 0.17}}$ 7.850.06+0.06${7.85_{ - 0.06}^{ + 0.06}}$ 0.0690.004+0.004${0.069_{ - 0.004}^{ + 0.004}}$ 1.820.36+0.36×1016$1.82_{ - 0.36}^{ + 0.36} \times {10^{16}}$

CH3OCHO Single 173.62.33+2.05${173.6_{ - 2.33}^{ + 2.05}}$ 17.440.01+0.01${17.44_{ - 0.01}^{ + 0.01}}$ 3.530.01+0.01${3.53_{ - 0.01}^{ + 0.01}}$ 8.170.01+0.01${8.17_{ - 0.01}^{ + 0.01}}$ 0.3480.02+0.002${0.348_{ - 0.02}^{ + 0.002}}$ 1.050.03+0.03×1017$1.05_{ - 0.03}^{ + 0.03} \times {10^{17}}$ 0.035 0.054

CH3OCHO Comp 1 134.412.21+14.87${134.4_{ - 12.21}^{ + 14.87}}$ 17.240.09+0.1${17.24_{ - 0.09}^{ + 0.1}}$ 0.650.04+0.04${0.65_{ - 0.04}^{ + 0.04}}$ 6.810.02+0.02${6.81_{ - 0.02}^{ + 0.02}}$ 0.1360.015+0.015${0.136_{ - 0.015}^{ + 0.015}}$ 1.010.33+0.33×1016$1.01_{ - 0.33}^{ + 0.33} \times {10^{16}}$ 0.079
Comp 2 111.36.1+6.48${111.3_{ - 6.1}^{ + 6.48}}$ 17.010.06+0.05${17.01_{ - 0.06}^{ + 0.05}}$ 1.130.07+0.07${1.13_{ - 0.07}^{ + 0.07}}$ 7.520.05+0.04${7.52_{ - 0.05}^{ + 0.04}}$ 0.2140.012+0.012${0.214_{ - 0.012}^{ + 0.012}}$ 1.470.25+0.25×1016$1.47_{ - 0.25}^{ + 0.25} \times {10^{16}}$
Comp 3 116.27.72+7.87${116.2_{ - 7.72}^{ + 7.87}}$ 17.150.06+0.05${17.15_{ - 0.06}^{ + 0.05}}$ 1.540.07+0.08${1.54_{ - 0.07}^{ + 0.08}}$ 9.620.07+0.07${9.62_{ - 0.07}^{ + 0.07}}$ 0.2020.013+0.014${0.202_{ - 0.013}^{ + 0.014}}$ 1.80.34+0.34×1016$1.8_{ - 0.34}^{ + 0.34} \times {10^{16}}$
Comp 4 168.615.37+18.13${168.6_{ - 15.37}^{ + 18.13}}$ 17.110.16+0.13${17.11_{ - 0.16}^{ + 0.13}}$ 1.250.09+0.1${1.25_{ - 0.09}^{ + 0.1}}$ 5.880.05+0.06${5.88_{ - 0.05}^{ + 0.06}}$ 0.160.014+0.021${0.16_{ - 0.014}^{ + 0.021}}$ 1.040.46+0.46×1016$1.04_{ - 0.46}^{ + 0.46} \times {10^{16}}$
Comp 5 133.86.81+7.49${133.8_{ - 6.81}^{ + 7.49}}$ 17.360.04+0.05${17.36_{ - 0.04}^{ + 0.05}}$ 1.450.06+0.06${1.45_{ - 0.06}^{ + 0.06}}$ 8.590.05+0.05${8.59_{ - 0.05}^{ + 0.05}}$ 0.2090.014+0.012${0.209_{ - 0.014}^{ + 0.012}}$ 3.130.54+0.54×1016$3.13_{ - 0.54}^{ + 0.54} \times {10^{16}}$
Comp 6 179.316.13+19.18${179.3_{ - 16.13}^{ + 19.18}}$ 18.930.08+0.09${18.93_{ - 0.08}^{ + 0.09}}$ 3.810.19+0.19${3.81_{ - 0.19}^{ + 0.19}}$ 8.150.11+0.11${8.15_{ - 0.11}^{ + 0.11}}$ 0.0510.004+0.005${0.051_{ - 0.004}^{ + 0.005}}$ 7.031.88+1.88×1016$7.03_{ - 1.88}^{ + 1.88} \times {10^{16}}$

Notes. For each molecule, we provide the best-fit parameters for the one-component LTE model (Sect. 4.1) denoted as single in the second column and for the multi-velocity component LTE model (Sect. 4.2) denoted as comp x in the second column. (a)The area is derived as πr2 where r is D/2. (b)The column density ratio with respect to CH3OH. (c)The abundance ratio with respect to CH3OH derived from the Ntot × area, i.e., Col. 8. For multiple-velocity case, the Ntot × area from each component are sum up.

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