/*
  cpt-city: pm/f-3-11-6 (cpt)

  Various gradients from Gnuplot: the original default pm3d
  colour gradient by Petr Mikulík from Masaryk University,
  nice rgb schemes listed in “help palette rgbformulae”
  and gradients from the pm3dcolors.dem demo script

  author: Petr Mikulik
  copyright: GPLv2
  year: 2006
  url: https://phillips.shef.ac.uk/pub/cpt-city/pm
*/
linear-gradient(
  0deg,
  rgb(  0, 128,   0)   0.000%,
  rgb(  4, 123,   0)   1.587%,
  rgb(  8, 119,   0)   3.175%,
  rgb( 12, 115,   0)   4.762%,
  rgb( 16, 111,   0)   6.349%,
  rgb( 20, 107,   0)   7.936%,
  rgb( 24, 103,   0)   9.524%,
  rgb( 28,  99,   0)  11.111%,
  rgb( 32,  95,   0)  12.698%,
  rgb( 36,  91,   0)  14.286%,
  rgb( 40,  87,   0)  15.873%,
  rgb( 45,  83,   0)  17.460%,
  rgb( 49,  79,   0)  19.048%,
  rgb( 53,  75,   0)  20.635%,
  rgb( 57,  71,   1)  22.222%,
  rgb( 61,  67,   1)  23.809%,
  rgb( 65,  63,   1)  25.397%,
  rgb( 69,  59,   1)  26.984%,
  rgb( 73,  55,   2)  28.571%,
  rgb( 77,  51,   2)  30.159%,
  rgb( 81,  47,   3)  31.746%,
  rgb( 85,  43,   3)  33.333%,
  rgb( 89,  38,   4)  34.921%,
  rgb( 93,  34,   5)  36.508%,
  rgb( 97,  30,   5)  38.095%,
  rgb(101,  26,   6)  39.682%,
  rgb(105,  22,   7)  41.270%,
  rgb(109,  18,   9)  42.857%,
  rgb(113,  14,  10)  44.444%,
  rgb(117,  10,  11)  46.032%,
  rgb(121,   6,  13)  47.619%,
  rgb(125,   2,  15)  49.206%,
  rgb(130,   2,  17)  50.794%,
  rgb(134,   6,  19)  52.381%,
  rgb(138,  10,  22)  53.968%,
  rgb(142,  14,  24)  55.556%,
  rgb(146,  18,  27)  57.143%,
  rgb(150,  22,  30)  58.730%,
  rgb(154,  26,  34)  60.318%,
  rgb(158,  30,  37)  61.905%,
  rgb(162,  34,  41)  63.492%,
  rgb(166,  38,  46)  65.079%,
  rgb(170,  42,  50)  66.667%,
  rgb(174,  47,  55)  68.254%,
  rgb(178,  51,  61)  69.841%,
  rgb(182,  55,  66)  71.429%,
  rgb(186,  59,  72)  73.016%,
  rgb(190,  63,  79)  74.603%,
  rgb(194,  67,  86)  76.191%,
  rgb(198,  71,  93)  77.778%,
  rgb(202,  75, 101)  79.365%,
  rgb(206,  79, 110)  80.952%,
  rgb(210,  83, 118)  82.540%,
  rgb(215,  87, 128)  84.127%,
  rgb(219,  91, 138)  85.714%,
  rgb(223,  95, 148)  87.302%,
  rgb(227,  99, 159)  88.889%,
  rgb(231, 103, 171)  90.476%,
  rgb(235, 107, 183)  92.064%,
  rgb(239, 111, 196)  93.651%,
  rgb(243, 115, 210)  95.238%,
  rgb(247, 119, 224)  96.825%,
  rgb(251, 123, 239)  98.413%,
  rgb(255, 128, 255) 100.000%
);