/*
  cpt-city: ncl/mch_default (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(255, 255, 255)   0.000%,
  rgb(255, 255, 255)   6.667%,
  rgb(  0,   0,   0)   6.667%,
  rgb(  0,   0,   0)  13.333%,
  rgb( 32,  32,  32)  13.333%,
  rgb( 32,  32,  32)  20.000%,
  rgb( 64,  64,  64)  20.000%,
  rgb( 64,  64,  64)  26.667%,
  rgb( 96,  96,  96)  26.667%,
  rgb( 96,  96,  96)  33.333%,
  rgb(128, 128, 128)  33.333%,
  rgb(128, 128, 128)  40.000%,
  rgb(160, 160, 160)  40.000%,
  rgb(160, 160, 160)  46.667%,
  rgb(192, 192, 192)  46.667%,
  rgb(192, 192, 192)  53.333%,
  rgb(224, 224, 224)  53.333%,
  rgb(224, 224, 224)  60.000%,
  rgb(255,   0,   0)  60.000%,
  rgb(255,   0,   0)  66.667%,
  rgb(  0, 255,   0)  66.667%,
  rgb(  0, 255,   0)  73.333%,
  rgb(  0,   0, 255)  73.333%,
  rgb(  0,   0, 255)  80.000%,
  rgb(255, 255,   0)  80.000%,
  rgb(255, 255,   0)  86.667%,
  rgb(  0, 255, 255)  86.667%,
  rgb(  0, 255, 255)  93.333%,
  rgb(255,   0, 255)  93.333%,
  rgb(255,   0, 255) 100.000%
);