// cpt-city: bgs/radon (cpt)
//
// British Geological Survey, schemes from the GeoIndex site
//
// author: British Geological Survey
// copyright: Crown Copyright, UK Open Government Licence for Public Sector Information v3.0
// year: 2026
// url: https://phillips.shef.ac.uk/pub/cpt-city/bgs
#declare radon =
color_map {
  [0.00000 color rgbf <0.9961,0.9412,0.8510,0.0000>]
  [0.01000 color rgbf <0.9961,0.9412,0.8510,0.0000>]
  [0.01000 color rgbf <0.9059,0.7373,0.6235,0.0000>]
  [0.03000 color rgbf <0.9059,0.7373,0.6235,0.0000>]
  [0.03000 color rgbf <0.7725,0.6353,0.6235,0.0000>]
  [0.05000 color rgbf <0.7725,0.6353,0.6235,0.0000>]
  [0.05000 color rgbf <0.6902,0.4235,0.4471,0.0000>]
  [0.10000 color rgbf <0.6902,0.4235,0.4471,0.0000>]
  [0.10000 color rgbf <0.6039,0.2353,0.3216,0.0000>]
  [0.30000 color rgbf <0.6039,0.2353,0.3216,0.0000>]
  [0.30000 color rgbf <0.4627,0.1804,0.2471,0.0000>]
  [1.00000 color rgbf <0.4627,0.1804,0.2471,0.0000>]
}