condition	mean	min	max
4 h after light	4.1	4.1	4.1
8 h after light	3.6	3.2	4.0
12 h after light	13.55	2.6	24.5
4 h after dark	10.85	10.7	11.0
8 h after dark	33.75	31.0	36.5
12 h after dark	10.05	3.3	16.8