/*
  cpt-city: ncl/temp_diff_18lev (cpt)

  Colour-tables from NCL (NCAR Command Language), an open-source
  interpreted language designed specifically for scientific data
  analysis and visualisation

  author: University Corporation for Atmospheric Research (UCAR)
  copyright: Custom open-source
  year: 2011
  url: https://phillips.shef.ac.uk/pub/cpt-city/ncl
*/
linear-gradient(
  0deg,
  rgb(  7,  30,  70)   0.000%,
  rgb(  7,  30,  70)   5.556%,
  rgb(  7,  47, 107)   5.556%,
  rgb(  7,  47, 107)  11.111%,
  rgb(  8,  87, 156)  11.111%,
  rgb(  8,  87, 156)  16.667%,
  rgb( 33, 113, 181)  16.667%,
  rgb( 33, 113, 181)  22.222%,
  rgb( 66, 146, 199)  22.222%,
  rgb( 66, 146, 199)  27.778%,
  rgb( 90, 160, 205)  27.778%,
  rgb( 90, 160, 205)  33.333%,
  rgb(120, 191, 214)  33.333%,
  rgb(120, 191, 214)  38.889%,
  rgb(170, 220, 230)  38.889%,
  rgb(170, 220, 230)  44.444%,
  rgb(219, 245, 255)  44.444%,
  rgb(219, 245, 255)  50.000%,
  rgb(255, 255, 255)  50.000%,
  rgb(255, 255, 255)  55.556%,
  rgb(255, 224, 224)  55.556%,
  rgb(255, 224, 224)  61.111%,
  rgb(252, 187, 170)  61.111%,
  rgb(252, 187, 170)  66.667%,
  rgb(252, 146, 114)  66.667%,
  rgb(252, 146, 114)  72.222%,
  rgb(251, 106,  74)  72.222%,
  rgb(251, 106,  74)  77.778%,
  rgb(240,  60,  43)  77.778%,
  rgb(240,  60,  43)  83.333%,
  rgb(204,  24,  30)  83.333%,
  rgb(204,  24,  30)  88.889%,
  rgb(166,  15,  20)  88.889%,
  rgb(166,  15,  20)  94.444%,
  rgb(120,  10,  15)  94.444%,
  rgb(120,  10,  15) 100.000%
);