var ceny = [[0,31.7],[-1,30.9],[-2,30.7],[-3,30.4]];

var litry = [[0,47.84],[-1,46],[-2,43.29],[-3,39.1]];

var tdatumy = {0:['01.07.2021'],1:['06.06.2021'],2:['16.05.2021'],3:['15.04.2021']};