condition	mean	min	max
4 h after light	15.305800000000001	14.0097	16.6019
8 h after light	18.69945	16.6994	20.6995
12 h after light	10.999695	9.17779	12.8216
4 h after dark	7.1117	6.88135	7.37577
8 h after dark	2.74834	2.50047	3.1178
12 h after dark	5.7317833333333335	5.39938	6.31677