condition	mean	min	max
4 h after light	7.816963333333334	7.5085	7.998460000000001
8 h after light	7.333413333333333	6.889239999999999	7.5724100000000005
12 h after light	6.65209	6.22994	6.86695
4 h after dark	7.528980000000001	7.238460000000001	7.735060000000001
8 h after dark	7.8163	7.31588	8.31942
12 h after dark	8.847626666666667	8.73657	8.95716