Independent variables Number degrees of freedom Value of F-Snedecor test Value of test probabilisty Free word 3 26568,63 0,0000 vehicle 6 0,02 0,9997 Route 6 0,13 0,9931 System 6 21,91 0,0000

Table 3: Variance analysis result - differences in air temperature measurements inside the cooling chamber depending on the vehicle, covered distance and monitoring system.