condition	mean	min	max
4 h after light	3.4	3.4	3.4
8 h after light	4.2	2.9	5.5
12 h after light	5.15	3.1	7.2
4 h after dark	18.45	3.5	33.4
8 h after dark	2.8	2.7	2.9
12 h after dark	4.15	2.4	5.9