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Table 2

Position-averaged total optical thickness (τ) and optical thickness at line centre (τ0) for given transition lines in single thread p4 model.

Line τ 0 τ

Lyα 2.15E+05 1.10E+04
Lyβ 3.45E+04 2.97E+03
Lyγ 1.20E+04 9.79E+02
Hα 4.31E-01 1.01E-01
Hβ 5.96E-02 1.29E-02
Pα 5.93E-03 1.99E-03
He i 10830 8.30E-02 1.94E-02
He i 584 1.60E+04 5.08E+02
He i 5876 8.12E-03 1.54E-03
He i 6878 6.61E-04 1.23E-04
He i 537 3.90E+03 2.28E+02
He ii 304 1.33E+03 6.23E+01

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