condition	mean	min	max
4 h after light	18.68385	17.4351	19.9326
8 h after light	19.2431	18.7816	19.7046
12 h after light	8.859195	7.18839	10.53
4 h after dark	6.27694	5.73665	6.81723
8 h after dark	7.0028950000000005	6.46145	7.54434
12 h after dark	8.820450000000001	8.26071	9.38019