condition	mean	min	max
4 h after light	4.5	4.5	4.5
8 h after light	25.05	19.0	31.1
12 h after light	7.8	2.5	13.1
4 h after dark	2.5	1.0	4.0
8 h after dark	12.65	12.3	13.0
12 h after dark	3.8	1.9	5.7