# 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: |
    F. Zernike, Jr.
    Refractive indices of ammonium dihydrogen phosphate and potassium dihydrogen phosphate between 2000 Å and 1.5 µ.
    <a href="https://doi.org/10.1364/JOSA.54.001215"><i>J. Opt. Soc. Am.</i> <b>54</b>, 1215-1219 (1964)</a>.
COMMENTS: |
    24.8 °C. Ordinary ray (o).
CONDITIONS:
    temperature: 297.95
    direction: o
DATA:
  - type: formula 4
    wavelength_range: 0.2138 1.529
    coefficients: 2.259276 13.00522 2 400 1 0.01008956 0 0.0129426 1