condition	mean	min	max
4 h after light	6993.1	6993.1	6993.1
8 h after light	6451.05	6311.6	6590.5
12 h after light	7004.15	6536.9	7471.4
4 h after dark	7712.950000000001	7535.8	7890.1
8 h after dark	8603.65	7836.3	9371.0
12 h after dark	8482.55	8339.9	8625.2