condition	mean	min	max
4 h after light	7.0	7.0	7.0
8 h after light	15.6	3.9	27.3
12 h after light	6.25	2.1	10.4
4 h after dark	33.9	3.3	64.5
8 h after dark	1.85	1.8	1.9
12 h after dark	3.2	2.7	3.7