condition	mean	min	max
0 h after light	9.92592	8.70674	11.1451
4 h after light	18.8884	16.978	20.7988
8 h after light	10.468715	8.13543	12.802
4 h after dark	6.00043	4.5606	7.44026
8 h after dark	21.2377	20.5614	21.914
12 h after dark	16.02355	14.2706	17.7765