condition	mean	min	max
4 h after light	6.9	6.9	6.9
8 h after light	7.5	6.8	8.2
12 h after light	7.75	3.4	12.1
4 h after dark	13.85	6.7	21.0
8 h after dark	55.1	5.0	105.2
12 h after dark	7.25	6.6	7.9