condition	mean	min	max
4 h after light	5.1	5.1	5.1
8 h after light	10.45	5.3	15.6
12 h after light	5.2	4.5	5.9
4 h after dark	7.35	6.7	8.0
8 h after dark	11.0	5.0	17.0
12 h after dark	12.0	8.4	15.6