condition	mean	min	max
4 h after light	7.3	7.3	7.3
8 h after light	7.0	2.5	11.5
12 h after light	21.55	3.0	40.1
4 h after dark	5.1	2.7	7.5
8 h after dark	3.6	2.0	5.2
12 h after dark	8.5	7.7	9.3