custom thermistor table

/**
 * Marlin 3D Printer Firmware
 * Copyright (C) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
 *
 * Based on Sprinter and grbl.
 * Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

// R200 = 1.0 KOhm, beta25 = 4537 K, 4.7 kOhm pull-up, Slice 250 °C Thermistor
const short temptable_68[][2] PROGMEM = {
{ OV{0.383},	250},
{ OV{0.39},		249},
{ OV{0.397},	248},
{ OV{0.404},	247},
{ OV{0.412},	246},
{ OV{0.419},	245},
{ OV{0.427},	244},
{ OV{0.434},	243},
{ OV{0.442},	242},
{ OV{0.451},	241},
{ OV{0.459},	240},
{ OV{0.467},	239},
{ OV{0.476},	238},
{ OV{0.485},	237},
{ OV{0.494},	236},
{ OV{0.503},	235},
{ OV{0.512},	234},
{ OV{0.522},	233},
{ OV{0.532},	232},
{ OV{0.542},	231},
{ OV{0.552},	230},
{ OV{0.563},	229},
{ OV{0.574},	228},
{ OV{0.584},	227},
{ OV{0.596},	226},
{ OV{0.607},	225},
{ OV{0.619},	224},
{ OV{0.631},	223},
{ OV{0.643},	222},
{ OV{0.656},	221},
{ OV{0.669},	220},
{ OV{0.682},	219},
{ OV{0.695},	218},
{ OV{0.709},	217},
{ OV{0.723},	216},
{ OV{0.737},	215},
{ OV{0.752},	214},
{ OV{0.767},	213},
{ OV{0.783},	212},
{ OV{0.799},	211},
{ OV{0.815},	210},
{ OV{0.831},	209},
{ OV{0.848},	208},
{ OV{0.866},	207},
{ OV{0.884},	206},
{ OV{0.902},	205},
{ OV{0.921},	204},
{ OV{0.94},		203},
{ OV{0.959},	202},
{ OV{0.979},	201},
{ OV{1	},		200},
{ OV{1.021},	199},
{ OV{1.043},	198},
{ OV{1.065},	197},
{ OV{1.088},	196},
{ OV{1.111},	195},
{ OV{1.135},	194},
{ OV{1.159},	193},
{ OV{1.185},	192},
{ OV{1.21},		191},
{ OV{1.237},	190},
{ OV{1.264},	189},
{ OV{1.292},	188},
{ OV{1.32},		187},
{ OV{1.35},		186},
{ OV{1.38},		185},
{ OV{1.411},	184},
{ OV{1.442},	183},
{ OV{1.475},	182},
{ OV{1.508},	181},
{ OV{1.543},	180},
{ OV{1.578},	179},
{ OV{1.614},	178},
{ OV{1.651},	177},
{ OV{1.689},	176},
{ OV{1.729},	175},
{ OV{1.769},	174},
{ OV{1.81},		173},
{ OV{1.853},	172},
{ OV{1.897},	171},
{ OV{1.941},	170},
{ OV{1.988},	169},
{ OV{2.035},	168},
{ OV{2.084},	167},
{ OV{2.134},	166},
{ OV{2.186},	165},
{ OV{2.239},	164},
{ OV{2.293},	163},
{ OV{2.35}, 	162},
{ OV{2.407},	161},
{ OV{2.467},	160},
{ OV{2.528},	159},
{ OV{2.591},	158},
{ OV{2.656},	157},
{ OV{2.722},	156},
{ OV{2.791},	155},
{ OV{2.862},	154},
{ OV{2.934},	153},
{ OV{3.009},	152},
{ OV{3.087},	151},
{ OV{3.166},	150},
{ OV{3.248},	149},
{ OV{3.332},	148},
{ OV{3.419},	147},
{ OV{3.509},	146},
{ OV{3.601},	145},
{ OV{3.697},	144},
{ OV{3.795},	143},
{ OV{3.896},	142},
{ OV{4	},		141},
{ OV{4.108},	140},
{ OV{4.219},	139},
{ OV{4.333},	138},
{ OV{4.452},	137},
{ OV{4.573},	136},
{ OV{4.699},	135},
{ OV{4.829},	134},
{ OV{4.963},	133},
{ OV{5.101},	132},
{ OV{5.244},	131},
{ OV{5.392},	130},
{ OV{5.544},	129},
{ OV{5.701},	128},
{ OV{5.864},	127},
{ OV{6.031},	126},
{ OV{6.205},	125},
{ OV{6.384},	124},
{ OV{6.569},	123},
{ OV{6.761},	122},
{ OV{6.959},	121},
{ OV{7.163},	120},
{ OV{7.375},	119},
{ OV{7.594},	118},
{ OV{7.82},		117},
{ OV{8.054},	116},
{ OV{8.297},	115},
{ OV{8.547},	114},
{ OV{8.807},	113},
{ OV{9.076},	112},
{ OV{9.354},	111},
{ OV{9.642},	110},
{ OV{9.94},		109},
{ OV{10.25},	108},
{ OV{10.57},	107},
{ OV{10.9},		106},
{ OV{11.24},	105},
{ OV{11.6},		104},
{ OV{11.97},	103},
{ OV{12.35},	102},
{ OV{12.75},	101},
{ OV{13.16},	100},
{ OV{13.59},	99},
{ OV{14.03},	98},
{ OV{14.49},	97},
{ OV{14.96},	96},
{ OV{15.46},	95},
{ OV{15.97},	94},
{ OV{16.5},		93},
{ OV{17.06},	92},
{ OV{17.63},	91},
{ OV{18.23},	90},
{ OV{18.85},	89},
{ OV{19.49},	88},
{ OV{20.16},	87},
{ OV{20.85},	86},
{ OV{21.58},	85},
{ OV{22.33},	84},
{ OV{23.11},	83},
{ OV{23.92},	82},
{ OV{24.77},	81},
{ OV{25.65},	80},
{ OV{26.56},	79},
{ OV{27.52},	78},
{ OV{28.51},	77},
{ OV{29.54},	76},
{ OV{30.62},	75},
{ OV{31.74},	74},
{ OV{32.91},	73},
{ OV{34.12},	72},
{ OV{35.39},	71},
{ OV{36.71},	70},
{ OV{38.09},	69},
{ OV{39.52},	68},
{ OV{41.02},	67},
{ OV{42.59},	66},
{ OV{44.22},	65},
{ OV{45.92},	64},
{ OV{47.69},	63},
{ OV{49.55},	62},
{ OV{51.49},	61},
{ OV{53.51},	60},
{ OV{55.62},	59},
{ OV{57.83},	58},
{ OV{60.14},	57},
{ OV{62.55},	56},
{ OV{65.07},	55},
{ OV{67.71},	54},
{ OV{70.46},	53},
{ OV{73.35},	52},
{ OV{76.37},	51},
{ OV{79.53},	50},
{ OV{82.84},	49},
{ OV{86.3},		48},
{ OV{89.93},	47},
{ OV{93.74},	46},
{ OV{97.72},	45},
{ OV{101.89},	44},
{ OV{106.3},	43},
{ OV{110.9},	42},
{ OV{115.7},	41},
{ OV{120.7},	40},
{ OV{126},		39},
{ OV{131.6},	38},
{ OV{137.4},	37},
{ OV{143.6},	36},
{ OV{150},		35},
{ OV{156.8},	34},
{ OV{163.9},	33},
{ OV{171.3},	32},
{ OV{179.2},	31},
{ OV{187.5},	30},
{ OV{196.2},	29},
{ OV{205.3},	28},
{ OV{214.9},	27},
{ OV{225.1},	26},
{ OV{235.7},	25},
{ OV{247},		24},
{ OV{258.8},	23},
{ OV{271.3},	22},
{ OV{284.4},	21},
{ OV{298.3},	20},
{ OV{312.9},	19},
{ OV{328.4},	18},
{ OV{344.7},	17},
{ OV{361.9},	16},
{ OV{380},		15},
{ OV{399.2},	14},
{ OV{419.4},	13},
{ OV{440.9},	12},
{ OV{463.5},	11},
{ OV{487.4},	10},
{ OV{512.7},	9},
{ OV{539.5},	8},
{ OV{567.9},	7},
{ OV{597.9},	6},
{ OV{629.7},	5},
{ OV{663.4},	4},
{ OV{699},		3},
{ OV{736.9},	2},
{ OV{777},		1},
{ OV{819.5},	0},
{ OV{1421},		-10},
{ OV{2548},		-20}
};