condition	mean	min	max
4 h after light	6.9	6.9	6.9
8 h after light	14.6	7.5	21.7
12 h after light	6.85	6.1	7.6
4 h after dark	7.65	6.5	8.8
8 h after dark	7.8500000000000005	7.4	8.3
12 h after dark	7.800000000000001	6.7	8.9