condition	mean	min	max
4 h after light	9.7	9.7	9.7
8 h after light	6.25	6.0	6.5
12 h after light	19.1	13.5	24.7
4 h after dark	8.7	5.2	12.2
8 h after dark	9.95	8.7	11.2
12 h after dark	8.7	5.8	11.6