moderately significantP < 0,001
Using the t-test, we calculated the size of the difference between the sample means in relation to their variability, with a threshold value and statistical significance (P) based on the chosen significance level (0.05 to 0.001): P > 0,05 - Insignificant, P 0,05–0,01 (*) - Marginally significant, P 0,01–0,001 (**) - Moderately significant, P < 0,001 (***) - Highly significant.