condition	mean	min	max
4 h after light	6.0	6.0	6.0
8 h after light	23.0	5.3	40.7
12 h after light	9.55	6.5	12.6
4 h after dark	14.3	12.8	15.8
8 h after dark	6.35	2.7	10.0
12 h after dark	1.55	1.1	2.0