condition	mean	min	max
4 h after light	6.66168	6.11551	7.22756
8 h after light	6.284120000000001	5.91845	6.622510000000001
12 h after light	5.82222	5.61947	6.093
4 h after dark	6.1006833333333335	5.61871	6.3957
8 h after dark	6.2549	5.99852	6.50354
12 h after dark	6.661336666666666	6.33409	7.175789999999999