condition	mean	min	max
4 h after light	8.284015	7.66784	8.90019
8 h after light	7.421445	7.28653	7.55636
12 h after light	8.10057	7.97441	8.22673
4 h after dark	12.4353	11.5496	13.321
8 h after dark	10.892050000000001	10.1655	11.6186
12 h after dark	10.33275	10.0968	10.5687