condition	mean	min	max
4 h after light	6.157534999999999	5.98293	6.33214
8 h after light	5.58949	4.96031	6.21867
12 h after light	6.259655	6.08531	6.434
4 h after dark	6.36409	6.19972	6.50582
8 h after dark	4.36822	4.19875	4.70678
12 h after dark	4.491643333333333	3.71597	5.05556