condition	mean	min	max
4 h after light	5.22633	4.30264	6.15002
8 h after light	7.780105000000001	7.62814	7.93207
12 h after light	7.39593	7.23485	7.55701
4 h after dark	7.756803333333333	7.41516	8.32418
8 h after dark	6.40175	5.89863	6.84375
12 h after dark	5.99689	5.92598	6.08603