Table 9: Physical properties and conditions of the interstellar medium in the lines-of-sight toward the SMC targets AzV 456 and AzV 18 (this work), the LMC target Sk-69 223 (Cox et al. 2006) and the Galactic targets HD 62542, HD 144217 ($\sigma $-type) and HD 149757 ($\zeta $-type). UV lines are indicated by (uv) and the weak and strong doublet lines by (w) and (s), respectively.
    SMC LMC MW
    Wing Bar 30 Doradus no bump $\sigma $ $\zeta $
Parameter Unit AzV 456 AzV 18 Sk-69 223 HD 62542 HD 144217 HD 149757
\ensuremath {{E_{B-V}}} mag 0.27 0.17 0.2 0.35 0.2 0.3
$R_{\rm V}$   2.2 2.9 3.6 or 4.1 2.90 4.0 3.1
$A_{\rm V}$ mag 0.6 0.5 0.8(0.2) 1.02 0.8 0.9
5780 DIB mÅ per \ensuremath {{E_{B-V}}} 256 135 725 151 800 220
5797 DIB mÅ per \ensuremath {{E_{B-V}}} 133 47 140 24 110 90
6613 DIB mÅ per \ensuremath {{E_{B-V}}} 181 <41 100 - 200 143
5780/5797   1.9 2.9 5.2 6.2 7.3 2.4
log N(Na I) cm-2 12.8 12.6 12.59 - 12.94 13.85
    13.6 (uv)          
log N(K I) cm-2 12.6w (uv) 11.76w 11.03 11.90 11.19 11.85
    12.7s (uv) 11.36s        
log N(H I) cm-2 21.3 21.95 21.46 20.93 21.10 20.73
log N(Ca II) cm-2 12.3 13.1 12.68 - 11.73 11.76
N(Na I)/N(Ca II)   2.5 0.5 0.9 - 16.2 123
N(H I)/$A_{\rm V}$ 1021 cm-2/mag 2.6 18.4 3.6 0.8 1.6 0.6
f(H2)   0.525 0.045 ? 0.603 0.05 0.32
log N(H $_{\rm tot}$) cm-2 21.75 21.95     21.13 21.15
N(H $_{\rm tot}$)/$A_{\rm V}$ 1021 cm-2/mag 9.36 17.95     1.69 1.57
5780 / Z (Z = $A_{\rm V}$/H I) 179 <442 522 42 256 40
5797 / Z (Z = $A_{\rm V}$/H I) 94 $\leq$74 101 7 35 16

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