condition	mean	min	max
4 h after light	6.1	6.1	6.1
8 h after light	7.85	4.7	11.0
12 h after light	7.050000000000001	6.4	7.7
4 h after dark	6.65	6.0	7.3
8 h after dark	6.35	4.9	7.8
12 h after dark	6.5	5.9	7.1