condition	mean	min	max
4 h after light	7.000523333333334	6.7622	7.27015
8 h after light	6.873293333333334	6.720560000000001	7.07952
12 h after light	6.837993333333333	6.65371	7.02263
4 h after dark	6.80245	6.612830000000001	6.968030000000001
8 h after dark	6.73525	6.45769	6.903739999999999
12 h after dark	6.859380000000001	6.690810000000001	7.1087