condition	mean	min	max
4 h after light	7.464043333333333	7.392939999999999	7.588019999999999
8 h after light	7.7601	7.56423	7.98354
12 h after light	7.71118	7.524539999999999	8.010539999999999
4 h after dark	7.72051	7.3879600000000005	8.10334
8 h after dark	7.762606666666667	7.515680000000001	8.2133
12 h after dark	7.40747	7.137410000000001	7.58886