condition	mean	min	max
4 h after light	7.9302	7.60351	8.25689
8 h after light	6.7127300000000005	6.68972	6.73574
12 h after light	7.85125	7.79674	7.90576
4 h after dark	10.6811	10.1109	11.2513
8 h after dark	8.755780000000001	8.19161	9.31995
12 h after dark	10.24764	9.50498	10.9903