condition	mean	min	max
4 h after light	7.021883333333333	6.937410000000001	7.09969
8 h after light	7.09096	7.00932	7.20529
12 h after light	7.1628099999999995	6.98267	7.41029
4 h after dark	7.224646666666667	7.06095	7.369610000000001
8 h after dark	7.04275	6.814610000000001	7.2179899999999995
12 h after dark	7.03447	6.90837	7.10128