condition	mean	min	max
4 h after light	9.898383333333333	9.53096	10.34065
8 h after light	7.278630000000001	6.9050199999999995	7.784860000000001
12 h after light	8.447776666666668	8.38695	8.5259
4 h after dark	8.04945	7.95551	8.10393
8 h after dark	9.973206666666666	9.871080000000001	10.08752
12 h after dark	10.623093333333333	10.42842	10.731010000000001