condition	mean	min	max
4 h after light	7.86834	7.7119800000000005	7.96997
8 h after light	7.985583333333333	7.76207	8.19609
12 h after light	7.82421	7.6902	7.90578
4 h after dark	8.030793333333333	7.78402	8.213460000000001
8 h after dark	7.971509999999999	7.6305	8.21852
12 h after dark	7.6989	7.498530000000001	7.8198300000000005