/*
  cpt-city: pm/f-34-35-36 (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,   0,   0)   0.000%,
  rgb(  8,   0,   0)   1.587%,
  rgb( 16,   0,   0)   3.175%,
  rgb( 24,   0,   0)   4.762%,
  rgb( 32,   0,   0)   6.349%,
  rgb( 40,   0,   0)   7.936%,
  rgb( 49,   0,   0)   9.524%,
  rgb( 57,   0,   0)  11.111%,
  rgb( 65,   0,   0)  12.698%,
  rgb( 73,   0,   0)  14.286%,
  rgb( 81,   0,   0)  15.873%,
  rgb( 89,   0,   0)  17.460%,
  rgb( 97,   0,   0)  19.048%,
  rgb(105,   0,   0)  20.635%,
  rgb(113,   0,   0)  22.222%,
  rgb(121,   0,   0)  23.809%,
  rgb(130,   2,   0)  25.397%,
  rgb(138,  10,   0)  26.984%,
  rgb(146,  18,   0)  28.571%,
  rgb(154,  26,   0)  30.159%,
  rgb(162,  34,   0)  31.746%,
  rgb(170,  42,   0)  33.333%,
  rgb(178,  51,   0)  34.921%,
  rgb(186,  59,   0)  36.508%,
  rgb(194,  67,   0)  38.095%,
  rgb(202,  75,   0)  39.682%,
  rgb(210,  83,   0)  41.270%,
  rgb(219,  91,   0)  42.857%,
  rgb(227,  99,   0)  44.444%,
  rgb(235, 107,   0)  46.032%,
  rgb(243, 115,   0)  47.619%,
  rgb(251, 123,   0)  49.206%,
  rgb(255, 132,   4)  50.794%,
  rgb(255, 140,  12)  52.381%,
  rgb(255, 148,  20)  53.968%,
  rgb(255, 156,  28)  55.556%,
  rgb(255, 164,  36)  57.143%,
  rgb(255, 172,  45)  58.730%,
  rgb(255, 180,  53)  60.318%,
  rgb(255, 188,  61)  61.905%,
  rgb(255, 196,  69)  63.492%,
  rgb(255, 204,  77)  65.079%,
  rgb(255, 212,  85)  66.667%,
  rgb(255, 221,  93)  68.254%,
  rgb(255, 229, 101)  69.841%,
  rgb(255, 237, 109)  71.429%,
  rgb(255, 245, 117)  73.016%,
  rgb(255, 253, 125)  74.603%,
  rgb(255, 255, 134)  76.191%,
  rgb(255, 255, 142)  77.778%,
  rgb(255, 255, 150)  79.365%,
  rgb(255, 255, 158)  80.952%,
  rgb(255, 255, 166)  82.540%,
  rgb(255, 255, 174)  84.127%,
  rgb(255, 255, 182)  85.714%,
  rgb(255, 255, 190)  87.302%,
  rgb(255, 255, 198)  88.889%,
  rgb(255, 255, 206)  90.476%,
  rgb(255, 255, 215)  92.064%,
  rgb(255, 255, 223)  93.651%,
  rgb(255, 255, 231)  95.238%,
  rgb(255, 255, 239)  96.825%,
  rgb(255, 255, 247)  98.413%,
  rgb(255, 255, 255) 100.000%
);