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Table 2

Line pairs used to assess the opacity.

Wavelength (µm) Transition (upper-lower levels) Level format: υ1 υ2 υ3 Aul (s−1) Eu (K) log((F/Fmax)/(Aul/Aul,max)) (–)
Line pair a

26.70259 (ref) 000–000 8 7 2–76 1 21.48 2288.63 2.18
15.16408 000–000 8 7 2–74 3 0.06 2288.63

Line pair b

23.94296 (ref) 000–000 115 6–104 7 9.98 2876.09 1.23
14.17713 000–000 11 5 6–102 9 0.30 2876.09

Line pair c

26.70220 (H216O) 000–000 87 1–76 2 21.48 2288.65
26.98991 (H218O) 000–000 8 7 1–76 2 20.77 2265.60

Notes. The reference lines are the lines with the highest Aul. The corresponding panel (a, b or c) is indicated.

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