condition	mean	min	max
4 h after light	5.6	5.6	5.6
8 h after light	7.75	3.9	11.6
12 h after light	11.7	6.0	17.4
4 h after dark	11.7	5.2	18.2
8 h after dark	6.4	4.5	8.3
12 h after dark	5.45	4.9	6.0