condition	mean	min	max
4 h after light	4.4	4.4	4.4
8 h after light	5.15	4.5	5.8
12 h after light	8.3	6.0	10.6
4 h after dark	5.7	4.4	7.0
8 h after dark	18.9	11.1	26.7
12 h after dark	8.2	8.2	8.2