condition	mean	min	max
0 h after light	24.88645	23.0303	26.7426
4 h after light	15.92095	11.9512	19.8907
8 h after light	20.20745	17.6706	22.7443
4 h after dark	18.4696	17.5098	19.4294
8 h after dark	29.48765	24.0278	34.9475
12 h after dark	17.1879	13.2916	21.0842