condition	mean	min	max
4 h after light	5.4	5.4	5.4
8 h after light	5.6	4.8	6.4
12 h after light	9.1	8.6	9.6
4 h after dark	9.9	2.0	17.8
8 h after dark	4.95	3.0	6.9
12 h after dark	5.5	3.0	8.0