condition	mean	min	max
4 h after light	8808.0	8808.0	8808.0
8 h after light	8699.65	8621.4	8777.9
12 h after light	8308.75	8247.1	8370.4
4 h after dark	7136.65	6554.3	7719.0
8 h after dark	7020.0	6680.6	7359.4
12 h after dark	6747.45	6727.2	6767.7