condition	mean	min	max
4 h after light	6.5	6.5	6.5
8 h after light	8.25	2.0	14.5
12 h after light	8.8	3.6	14.0
4 h after dark	37.3	26.6	48.0
8 h after dark	11.15	1.6	20.7
12 h after dark	3.1	2.7	3.5