Table 4
Total ice and gas column densities of the species analysed towards the SVS 4 sources.
| Source |  |
 |
 |
 |
 |
 |
 |
|---|---|---|---|---|---|---|---|
| [1018 cm−2] | [1018 cm−2] | [1018 cm−2] | [1018 cm−2] | [1014 cm−2] | [1023 cm−2] | [1023 cm−2] | |
| SVS 4−2 | 1.26 ± 0.11 | 0.45 ± 0.08 | 0.22 ± 0.03 | 2.71 |
8.24 |
0.80 |
0.14 |
| SVS 4−3 | 3.85 ± 0.32 | 2.24 ± 0.20 | 1.06 ± 0.10 | 2.58 |
1.92 |
0.18 |
0.6 |
| SVS 4−4 | 1.42 ± 0.09 | 0.52 ± 0.05 | 0.28 ± 0.02 | 2.65 |
3.23 |
0.30 |
0.16 |
| SVS 4–5 | 5.85 ± 0.60 | 2.04 ± 0.19 | 1.91 ± 0.27 | 3.70 |
4.50 |
0.65 |
0.7 |
| SVS 4−6 | 1.38 ± 0.17 | 0.70 ± 0.08 | 0.52 ± 0.06 | 3.20 |
6.67 |
0.78 |
0.16 |
| SVS 4−7 | 3.40 ± 1.00 | 1.10 ± 0.09 | 0.98 ± 0.64 | 2.80 |
3.27 |
0.16 |
0.35 |
| SVS 4−8 | 2.06 ± 0.14 | 1.36 ± 0.07 | 0.64 ± 0.05 | 2.77 |
3.10 |
0.20 |
0.36 |
| SVS 4−9 | 1.91 ± 0.14 | 2.06 ± 0.37 | 1.26 ± 0.11 | 2.35 |
2.17 |
0.28 |
0.35 |
| SVS 4−10 | 1.46 ± 0.07 | 1.16 ± 0.03 | 0.57 ± 0.06 | 2.66 |
2.81 |
0.38 |
0.2 |
| SVS 4−12 | 12.4 ± 5.90 | 3.12 ± 0.74 | 2.28 ± 0.18 | 3.32 |
3.14 |
0.73 |
0.86 |
Notes. Columns 5–7 list the column densities that were calculated for T = 15 K. For 
,
, and
, the values in the superscript and subscript represent the upper and lower limits if the column densities are calculated at T = 10 K or T = 20 K, respectively. (*) Estimated relative uncertainty of 5%. See Sects. 3.1–3.2 and Appendices A, B, and C for a more detailed description of the determination of ice, gas, and H2 column densities.
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