Table 1
Statistical properties of H2 observations in the subsamples A, B, C, D, and E defined in footnote and shown in Fig. 3.
| Region | Number | % |  |
 |
|---|---|---|---|---|
| A | 10 | 3 | −5.02 | 0.99 |
| B | 41 | 13 | −4.62 | 0.70 |
| C | 50 | 16 | −1.10 | 0.49 |
| D | 204 | 65 | −0.70 | 0.37 |
| E | 0 | 0 | − | − |
Notes. Only the lines of sight where H2 has been detected (312 sources out of 360, see Table A.1) are considered. The mean and dispersion values, μ and σ are computed on the logarithm of the molecular fraction 
observed in the corresponding subsample. Definitions of subsamples: region A: 5 × 1018 ≤ NH ≤ 5 × 1019,
; region B:
5 × 1019 ≤ NH ≤ 7 × 1020,
; region C: 1.6 × 1020 ≤ NH ≤ 1021,
; region D: 1021 ≤ NH ≤1022,
; region E: 1022 ≤ NH ≤ 1023,
.
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