/*
  cpt-city: pm/pm3d01 (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( 13,  13,  51)   0.000%,
  rgb( 11,  11,  83)   1.587%,
  rgb(  9,   9, 116)   3.175%,
  rgb(  7,   7, 148)   4.762%,
  rgb(  5,   5, 181)   6.349%,
  rgb(  3,   3, 213)   7.936%,
  rgb(  1,   1, 245)   9.524%,
  rgb( 13,  16, 253)  11.111%,
  rgb( 32,  39, 250)  12.698%,
  rgb( 51,  62, 248)  14.286%,
  rgb( 70,  85, 245)  15.873%,
  rgb( 89, 108, 242)  17.460%,
  rgb(108, 131, 240)  19.048%,
  rgb(127, 154, 237)  20.635%,
  rgb(145, 177, 234)  22.222%,
  rgb(164, 200, 232)  23.809%,
  rgb(174, 216, 223)  25.397%,
  rgb(155, 213, 199)  26.984%,
  rgb(136, 211, 175)  28.571%,
  rgb(117, 208, 151)  30.159%,
  rgb( 98, 205, 126)  31.746%,
  rgb( 79, 203, 102)  33.333%,
  rgb( 60, 200,  78)  34.921%,
  rgb( 42, 197,  53)  36.508%,
  rgb( 23, 194,  29)  38.095%,
  rgb(  4, 192,   5)  39.682%,
  rgb( 32, 199,   0)  41.270%,
  rgb( 73, 209,   0)  42.857%,
  rgb(113, 220,   0)  44.444%,
  rgb(154, 230,   0)  46.032%,
  rgb(194, 240,   0)  47.619%,
  rgb(235, 250,   0)  49.206%,
  rgb(255, 245,   0)  50.794%,
  rgb(255, 225,   0)  52.381%,
  rgb(255, 204,   0)  53.968%,
  rgb(255, 184,   0)  55.556%,
  rgb(255, 164,   0)  57.143%,
  rgb(255, 144,   0)  58.730%,
  rgb(255, 123,   0)  60.318%,
  rgb(255, 103,   0)  61.905%,
  rgb(255,  83,   0)  63.492%,
  rgb(255,  63,   0)  65.079%,
  rgb(255,  42,   0)  66.667%,
  rgb(255,  22,   0)  68.254%,
  rgb(255,   2,   0)  69.841%,
  rgb(248,  11,  11)  71.429%,
  rgb(240,  23,  23)  73.016%,
  rgb(232,  35,  35)  74.603%,
  rgb(223,  47,  47)  76.191%,
  rgb(215,  60,  60)  77.778%,
  rgb(207,  72,  72)  79.365%,
  rgb(199,  84,  84)  80.952%,
  rgb(191,  96,  96)  82.540%,
  rgb(183, 108, 108)  84.127%,
  rgb(175, 120, 120)  85.714%,
  rgb(167, 132, 132)  87.302%,
  rgb(159, 144, 144)  88.889%,
  rgb(157, 157, 157)  90.476%,
  rgb(171, 171, 171)  92.064%,
  rgb(186, 186, 186)  93.651%,
  rgb(200, 200, 200)  95.238%,
  rgb(214, 214, 214)  96.825%,
  rgb(228, 228, 228)  98.413%,
  rgb(242, 242, 242) 100.000%
);