condition	mean	min	max
4 h after light	18.8	18.8	18.8
8 h after light	9.3	1.5	17.1
12 h after light	19.5	7.7	31.3
4 h after dark	3.05	2.2	3.9
8 h after dark	31.05	28.4	33.7
12 h after dark	11.85	4.2	19.5