condition	mean	min	max
4 h after light	17.5	17.5	17.5
8 h after light	21.85	15.9	27.8
12 h after light	10.95	10.4	11.5
4 h after dark	7.4	1.5	13.3
8 h after dark	5.3	2.8	7.8
12 h after dark	1.7000000000000002	0.8	2.6