condition	mean	min	max
4 h after light	7.886064999999999	7.06049	8.71164
8 h after light	7.44304	7.38144	7.50464
12 h after light	6.8259	6.80824	6.84356
4 h after dark	8.748425000000001	8.56979	8.92706
8 h after dark	8.219845	7.9262	8.51349
12 h after dark	8.82709	7.83618	9.818