condition	mean	min	max
4 h after light	3.5	3.5	3.5
8 h after light	12.2	5.0	19.4
12 h after light	4.15	2.0	6.3
4 h after dark	3.95	3.5	4.4
8 h after dark	9.1	2.8	15.4
12 h after dark	5.2	3.0	7.4