<?php function GrayML ($TL,$Ta,$Tb) {$TC=124.047743+-1.21418*$TL+1.030176*$Ta+1.030176*$Tb+-0.000257*pow($TL,2)+-0.029214*$TL*$Ta+-0.029214*$TL*$Tb+-0.0004*pow($Ta,2)+-0.0004*$Ta*$Tb+-0.0004*pow($Tb,2);
$TM=162.725362+-2.683507*$TL+0.3454*$Ta+0.3454*$Tb+0.009141*pow($TL,2)+0.001748*$TL*$Ta+0.001748*$TL*$Tb+-0.001562*pow($Ta,2)+-0.001562*$Ta*$Tb+-0.001562*pow($Tb,2);
$TY=159.725362+-2.683507*$TL+0.3454*$Ta+0.3454*$Tb+0.009141*pow($TL,2)+0.001748*$TL*$Ta+0.001748*$TL*$Tb+-0.001562*pow($Ta,2)+-0.001562*$Ta*$Tb+-0.001562*pow($Tb,2);
return [$TC, $TM, $TY];}
?>