condition	mean	min	max
4 h after light	7.577344999999999	6.77663	8.37806
8 h after light	9.059664999999999	8.21261	9.90672
12 h after light	9.389305	9.08735	9.69126
4 h after dark	13.290333333333333	12.5025	14.4
8 h after dark	15.499733333333333	15.0914	16.1124
12 h after dark	10.528026666666667	8.7819	13.2108