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Table A.2

Comparison of the mean value of [S/H] in each GEMS cut with that derived toward the visual extinction peak (coordinates in Table 1). The parameter Ddiff is the uncertainty as defined in Sect. 5.

Region Cloud cut Peak Mean
Taurus TMC 1 CP 2.3 × 10−7 0.39 7.8 × 10−7 0.46
NH3 2.3 × 10−7 0.16 3.1 × 10−6 0.33
C 4.7 × 10−7 0.48 5.6 × 10−7 0.41
B 213-N C1 1.1 × 10−6 0.14 8.7 × 10−7 0.29
C2 2.3 × 10−7 0.34 3.6 × 10−7 0.43
C5 4.7 × 10−7 0.31 4.1 × 10−7 0.55
C6 2.3 × 10−7 0.27 1.2 × 10−6 0.52
C7 2.3 × 10−7 0.25 8.4 × 10−7 0.22
B 213-S C10 2.3 × 10−7 0.32 2.7 × 10−7 0.28
C12 2.3 × 10−7 0.41 2.1 × 10−7 0.38
C16 4.7 × 10−7 0.38 2.2 × 10−7 0.48
C17 4.7 × 10−7 0.14 4.3 × 10−7 0.29

Perseus B5 (#79) C1 4.7 × 10−7 0.18 5.5 × 10−7 0.28
L1448 C1 1.1 × 10−6 0.16 6.0 × 10−7 0.17
IC348 C1 2.3 × 10−7 0.15 4.1 × 10−7 0.48
C10 8.0 × 10−8 0.20 1.1 × 10−7 0.35
NGC 1333 C1 9.4 × 10−7 0.48 3.6 × 10−7 0.48
C2 2.3 × 10−7 0.28 2.9 × 10−7 0.44
C3 4.7 × 10−7 0.16 8.2 × 10−7 0.44
C4 1.1 × 10−6 0.09 7.7 × 10−7 0.35
C5 2.3 × 10−7 0.23 1.8 × 10−6 0.94
C6 2.3 × 10−7 0.23 2.7 × 10−7 0.66
C7 4.7 × 10−7 0.28 4.7 × 10−7 0.28
B1b C1 1.1 × 10−6 0.43 4.3 × 10−6 0.34
C2 4.7 × 10−7 0.28 5.4 × 10−7 0.30
C3 9.4 × 10−7 0.22 6.5 × 10−7 0.42

Orion A C1 2.3 × 10−7 0.51 4.8 × 10−6 0.51
C2 7.5 × 10−6 0.06 5.1 × 10−6 0.28
C3 9.4 × 10−7 0.10 3.0 × 10−6 0.23

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