// cpt-city: xkcd/xkcd-temperature (cpt)
//
// Randall Munroe's temparature scheme as used in XKCD episode
// 1237, Earth Temperature Timeline
//
// author: Randall Munroe
// copyright: Creative Commons Attribution-NonCommercial 2.5 Generic
// year: 2012
// url: https://phillips.shef.ac.uk/pub/cpt-city/xkcd
#declare xkcd_temperature =
color_map {
  [0.00000 color rgbf <0.5725,0.6039,0.8196,0.0000>]
  [0.10000 color rgbf <0.5725,0.6039,0.8196,0.0000>]
  [0.10000 color rgbf <0.7020,0.7216,0.8784,0.0000>]
  [0.20000 color rgbf <0.7020,0.7216,0.8784,0.0000>]
  [0.20000 color rgbf <0.7725,0.7882,0.9059,0.0000>]
  [0.30000 color rgbf <0.7725,0.7882,0.9059,0.0000>]
  [0.30000 color rgbf <0.8392,0.8510,0.9176,0.0000>]
  [0.40000 color rgbf <0.8392,0.8510,0.9176,0.0000>]
  [0.40000 color rgbf <0.9804,0.9804,0.9882,0.0000>]
  [0.50000 color rgbf <0.9804,0.9804,0.9882,0.0000>]
  [0.50000 color rgbf <0.9882,0.9804,0.9804,0.0000>]
  [0.60000 color rgbf <0.9882,0.9804,0.9804,0.0000>]
  [0.60000 color rgbf <0.8784,0.8353,0.8039,0.0000>]
  [0.70000 color rgbf <0.8784,0.8353,0.8039,0.0000>]
  [0.70000 color rgbf <0.8824,0.8118,0.7686,0.0000>]
  [0.80000 color rgbf <0.8824,0.8118,0.7686,0.0000>]
  [0.80000 color rgbf <0.8471,0.7529,0.6941,0.0000>]
  [0.90000 color rgbf <0.8471,0.7529,0.6941,0.0000>]
  [0.90000 color rgbf <0.7765,0.6431,0.5647,0.0000>]
  [1.00000 color rgbf <0.7765,0.6431,0.5647,0.0000>]
}