condition	mean	min	max
4 h after light	6.95291	6.8503	7.138780000000001
8 h after light	6.897410000000001	6.705310000000001	7.2087
12 h after light	6.787286666666667	6.5603	7.032439999999999
4 h after dark	6.64636	6.51727	6.86658
8 h after dark	6.414006666666666	6.31473	6.55766
12 h after dark	6.70653	6.53571	6.92955