condition	mean	min	max
4 h after light	6.0	6.0	6.0
8 h after light	3.15	1.7	4.6
12 h after light	3.3	2.1	4.5
4 h after dark	17.3	2.7	31.9
8 h after dark	2.15	1.8	2.5
12 h after dark	10.25	9.5	11.0