\begin{table}%T1 \par \caption{\label{tab1}Observational measurements and published data. Description is presented in the text.} \small%\centering \par \begin{tabular}{rlrrrrrrrrrr} \hline\hline\noalign{\smallskip} $^{\rm Obs}$HD & Spec/L & $E(B-V)$ & $W_{3447}$ & $W_{3579}$ & $W_{3745}$ & $W_{3957}$ & $W_{4232}$ & $N$(CH$^+$) & $W_{4232}^{\rm Lit}$ & $N$(CH$^+$)$^{\rm Lit}$ & $S/N$\\\noalign{\smallskip} & & & [m\AA] & [m\AA] & [m\AA] & [m\AA] & [m\AA] & [10$^{12}$~cm$^{-2}$] & [m\AA] & [10$^{12}$~cm$^{-2}$] \\ \hline 58~343 & B2Vne & 0.14 & & & 1.70(0.34) & 3.89(0.42) & 6.87(0.67) & 7.95 (0.78)$^{a}$ & & & 400\\ 68~761 & B0.5III & 0.14 & & & 2.10(0.31) & 3.69(0.37) & 5.78(0.60) & 6.69 (0.69)$^{a}$ & & & 390\\ 76~341 & B1/B2Ib & 0.46 & 2.10(0.30) & 3.86(0.45) & 10.11(0.82) & 22.66(1.23) & 38.25(1.97) & 47.35 (3.91)$^{c}$ & & & 290\\ 92~740 & WN7 & 0.36 & & & 3.30(0.30) & 6.79(0.71) & 13.21(0.95) & 15.29 (1.10)$^{a}$ & & & 470\\ 94~963 & O6/O7IIIe& 0.20 & & & 1.50(0.32) & 3.86(0.43) & 6.26(0.70) & 7.25 (0.81)$^{a}$ & & & 400\\ 96~917 & O8 & 0.37 & & 1.20(0.30) & 4.56(0.41) & 8.57(0.93) & 16.85(1.54) & 19.50 (1.78)$^{a}$ & & & 390\\ 97~253 & O5IIIe & 0.50 & & 1.46(0.35) & 5.50(0.47) & 10.63(0.86) & 18.15(1.08) & 21.01 (1.25)$^{a}$ & & & 550\\ 105~056 & O9.5Ia & 0.33 & & & 3.85(0.65) & 10.37(1.12) & 18.98(2.12) & 21.97 (2.45)$^{a}$ & & & 220\\ 105~071 & B6Ia/Iab& 0.25 & & & 3.75(0.41) & 6.57(0.53) & 11.48(0.68) & 13.29 (0.79)$^{a}$ & & & 340\\ 106~068 & B8Ia/Iab& 0.32 & 2.20(0.34) & 3.79(0.40) & 7.75(0.54) & 16.9(0.61) & 27.88(1.43) & 35.65 (1.33)$^{b}$ & & & 300\\ & & & & & & & & & & & \\ 109~867 & B0.5/B1Iab& 0.26 & & 0.90(0.30) & 1.68(0.45) & 5.51(0.54) & 9.72(1.21) & 11.25 (1.40)$^{a}$ & & & 380\\ 112~272 & B1Ia/Iab& 0.99 & & & 6.95(0.35) & 16.26(0.86) & 30.25(1.33) & 35.01 (1.54)$^{a}$ & & & 330\\ 113~904 & WC+O9.5& 0.16 & & & 1.25(0.32) & 2.92(0.35) & 5.60(0.46) & 6.48 (0.53)$^{a}$ & 5.9(0.3)$^{d}$ & 6.83(0.34)$^{d}$& 340\\ 115~363 & B1Ia & 0.82 & & & 3.40(0.43) & 8.63(0.87) & 16.59(1.56) & 19.20 (1.81)$^{a}$ & & & 420\\ 115~842 & B0.5Ia & 0.51 & & & 4.00(0.34) & 9.79(0.94) & 15.40(1.43) & 17.82 (1.66)$^{a}$ & & & 370\\ 133~518 & B2IVp...& 0.09 & & & 1.72(0.41) & 4.66(0.42) & 9.60(1.08) & 11.11 (1.25)$^{a}$ & & & 330\\ 142~758 & B1Ia & 0.41 & & 1.40(0.34) & 5.09(0.43) & 10.03(0.93) & 18.89(1.32) & 21.86 (1.53)$^{a}$ & & & 380\\ 143~448 & B2/B3III& 0.11 & & & 1.35(0.29) & 2.53(0.31) & 4.76(0.61) & 5.51 (0.71)$^{a}$ & & & 420\\ $^{H}$147~889& B2III/IV& 1.02 & & 3.10(0.45) & 6.63(0.67) & 15.93(0.93) & 25.95(0.82) & 33.60 (2.03)$^{b}$ & 25.0(5.8)$^{e}$ & 40.74(9.7)$^{e}$&690\\ $^{H}$148~184& B2Vne & 0.43 & & 1.25(0.31) & 2.82(0.34) & 6.33(0.43) & 10.03(0.45) & 11.61 (0.52)$^{a}$ & 9.98(0.03)$^{d}$ & 11.55(0.03)$^{d}$& 700\\ & & & & & & & & & & \\ 148~688 & B1Ia & 0.55 & & 1.85(0.35) & 6.10(0.56) & 12.77(0.65) & 23.21(0.84) & 26.94 (1.42)$^{a}$ & & & 480\\ 148~937 & O6e & 0.67 & & & 3.27(0.42) & 9.06(0.87) & 17.63(1.24) & 20.40 (1.44)$^{a}$ & & & 360\\ 151~932 & WN7 & 0.50 & & 1.21(0.32) & 3.75(0.48) & 7.22(0.65) & 13.27(1.12) & 15.36 (1.30)$^{a}$ & & & 340\\ $^{H}$152~235& B0.7Ia & 0.73 & 1.85(0.32) & 3.75(0.43) & 11.22(0.66) & 25.44(1.21) & 42.29(1.62) & 53.66 (2.64)$^{b}$ & 42(5)$^{f}$ & 58(--)$^{f}$& 650\\ 152~270 & WC7 & 0.50 & 1.00(0.30) & 2.25(0.35) & 5.31(0.43) & 11.90(0.54) & 22.90(0.93) & 26.50 (1.08)$^{a}$ & & & 310\\ 154~368 & O9Ia & 0.80 & 1.00(0.30) & 1.80(0.37) & 4.15(0.35) & 10.10(0.45) & 17.20(0.89) & 19.91 (1.03)$^{a}$ & 17.5(0.4)$^{d}$ & 20.25(0.46)$^{d}$ & 510\\ 154~811 & O9.5Ib & 0.66 & & 2.96(0.43) & 9.13(0.65) & 19.03(1.23) & 31.86(1.43) & 41.48 (2.68)$^{b}$ & & & 370\\ 154~873 & B1Ib & 0.47 & & 2.38(0.46) & 5.35(0.34) & 12.96(1.10) & 21.06(0.85) & 24.37 (0.98)$^{a}$ & & & 350\\ 155~806 & O8Ve & 0.32 & & & 2.78(0.31) & 6.10(0.45) & 9.05(0.67) & 10.47 (0.78)$^{a}$ & 8.0(0.2)$^{d}$ & 9.26(0.23)$^{d}$ & 320\\ 156~385 & WC7 & 0.34 & & & 2.87(0.36) & 6.78(0.56) & 13.07(0.76) & 15.13 (0.88)$^{a}$ & & & 440\\ & & & & & & & & & & & \\ 156~575 & B1Ib/II & 0.40 & & 2.80(0.37) & 5.61(0.42) & 11.48(0.87) & 23.96(0.93) & 27.73 (1.08)$^{a}$ & & & 360\\ $^{H}$163~800& O7/O8& 0.58 & 0.50(0.07) & 1.25(0.32) & 3.97(0.43) & 7.69(0.41) & 13.42(0.43) & 15.53 (0.50)$^{a}$ & & & 420\\ 164~794 & O4V... & 0.36 & & & 2.34(0.31) & 4.67(0.34) & 9.32(0.54) & 10.79 (0.62)$^{a}$ & & & 350\\ 170~235 & B2Vnne & 0.29 & & & 1.39(0.29) & 3.16(0.32) & 6.51(0.45) & 7.53 (0.52)$^{a}$ & & & 400\\ 171~432 & B1/B2Iab& 0.43 & & & 2.25(0.34) & 7.30(0.53) & 11.97(0.56) & 13.85 (0.65)$^{a}$ & & & 430\\ $^{H}$179~406& B3V & 0.31 & & & & 1.67(0.40) & 3.60(0.50) & 4.17 (0.60)$^{a}$& & & 500\\ \hline \end{tabular} \end{table}