// cpt-city: wkp/stat/chi2 (cpt)
//
// The Wikipedia χ2 confidence table scheme
//
// author: Unknown wikipedia contributor
// copyright: Creative commons attribution share-alike 3.0 unported
// year: 2011
// url: https://phillips.shef.ac.uk/pub/cpt-city/wkp/stat
#declare chi2 =
color_map {
  [0.00000 color rgbf <1.0000,0.6353,0.6667,0.0000>]
  [0.00901 color rgbf <1.0000,0.6353,0.6667,0.0000>]
  [0.00901 color rgbf <0.9373,0.6667,0.6667,0.0000>]
  [0.04905 color rgbf <0.9373,0.6667,0.6667,0.0000>]
  [0.04905 color rgbf <0.9098,0.6980,0.6667,0.0000>]
  [0.09910 color rgbf <0.9098,0.6980,0.6667,0.0000>]
  [0.09910 color rgbf <0.8745,0.7294,0.6667,0.0000>]
  [0.19920 color rgbf <0.8745,0.7294,0.6667,0.0000>]
  [0.19920 color rgbf <0.8471,0.7608,0.6667,0.0000>]
  [0.29930 color rgbf <0.8471,0.7608,0.6667,0.0000>]
  [0.29930 color rgbf <0.8118,0.7922,0.6667,0.0000>]
  [0.49950 color rgbf <0.8118,0.7922,0.6667,0.0000>]
  [0.49950 color rgbf <0.7843,0.8235,0.6667,0.0000>]
  [0.69970 color rgbf <0.7843,0.8235,0.6667,0.0000>]
  [0.69970 color rgbf <0.7490,0.8549,0.6667,0.0000>]
  [0.79980 color rgbf <0.7490,0.8549,0.6667,0.0000>]
  [0.79980 color rgbf <0.7216,0.8863,0.6667,0.0000>]
  [0.89990 color rgbf <0.7216,0.8863,0.6667,0.0000>]
  [0.89990 color rgbf <0.6863,0.9176,0.6667,0.0000>]
  [0.94995 color rgbf <0.6863,0.9176,0.6667,0.0000>]
  [0.94995 color rgbf <0.6588,0.9804,0.6667,0.0000>]
  [1.00000 color rgbf <0.6588,0.9804,0.6667,0.0000>]
}