condition	mean	min	max
4 h after light	4.0	4.0	4.0
8 h after light	3.55	1.9	5.2
12 h after light	36.25	17.1	55.4
4 h after dark	19.3	2.9	35.7
8 h after dark	40.25	30.9	49.6
12 h after dark	24.45	20.4	28.5