condition	mean	min	max
4 h after light	9556.6	9556.6	9556.6
8 h after light	9054.0	8692.2	9415.8
12 h after light	9013.5	8700.3	9326.7
4 h after dark	9944.85	9369.6	10520.1
8 h after dark	8992.8	8973.2	9012.4
12 h after dark	8229.3	7871.0	8587.6