Note

Go to the end to download the full example code.

Methane: the curated data#

Every direct methane dataset (a refractivity, polarizability or molar refractivity) turned into the refractivity of the real gas at 0 °C and 1 atm, with the published formulas (solid), the recorded luna_physdata formulas (dashed) and refractiveindex.info’s entries (dotted), each over the range its source supports. The lower panel shows the deviations from He et al.’s formula (Eq. 10).

CH4: curated data and published models
from _helpers import data_overview

fig = data_overview("CH4", "he_2021/CH4", xlim=(1.5e-07, 2e-05))

Total running time of the script: (0 minutes 0.701 seconds)