# this file is part of refractiveindex.info database
# refractiveindex.info database is in the public domain
# copyright and related rights waived via CC0 1.0

REFERENCES: |
    K. P. Birch and M. J. Downs.
    Correction to the updated Edlén equation for the refractive index of air.
    <a href="https://doi.org/10.1088/0026-1394/31/4/006"><i>Metrologia</i> <b>31</b>, 3015 (1994)</a><br>
    [<a href="https://github.com/polyanskiy/refractiveindex.info-scripts/blob/main/scripts/Birch%201994%20-%20air.py">Calculation script (Python)</a> - can be used to calculate the refractive index of air for specific values of humidity, temperature, and pressure]
COMMENTS: |
    Standard air: dry air at 15 °C, 101.325 kPa and with 450 ppm CO<sub>2</sub> content.
DATA:
  - type: tabulated n
    data: |
        0.35 1.000286117508
        0.36 1.000285320614
        0.37 1.000284593971
        0.38 1.000283929371
        0.39 1.000283319792
        0.40 1.000282759203
        0.41 1.000282242390
        0.42 1.000281764829
        0.43 1.000281322576
        0.44 1.000280912177
        0.45 1.000280530598
        0.46 1.000280175162
        0.47 1.000279843501
        0.48 1.000279533513
        0.49 1.000279243325
        0.50 1.000278971266
        0.51 1.000278715838
        0.52 1.000278475698
        0.53 1.000278249637
        0.54 1.000278036564
        0.55 1.000277835492
        0.56 1.000277645529
        0.57 1.000277465862
        0.58 1.000277295756
        0.59 1.000277134536
        0.60 1.000276981590
        0.61 1.000276836357
        0.62 1.000276698322
        0.63 1.000276567014
        0.64 1.000276441999
        0.65 1.000276322880
CONDITIONS:
    temperature: 288.15
    pressure: 101325