Table 2. Welch t-test comparing mean daily total flight time between summer and winter

Variable	Summer N=92	Winter N=88	p-value
Flight time	10.34±4.93	8.53±3.74	0.006**
Welch’s t-test	t(169.35)=2.78, 95% CI for mean difference (summer–winter): 0.53 to 3.09 h

Note. Values are presented as mean ± SD.
p<.01.