condition	mean	min	max
4 h after light	8.0	8.0	8.0
8 h after light	14.45	4.7	24.2
12 h after light	22.65	21.3	24.0
4 h after dark	14.5	7.4	21.6
8 h after dark	3.05	2.8	3.3
12 h after dark	17.5	6.2	28.8