condition	mean	min	max
4 h after light	8.588966666666666	8.531989999999999	8.64888
8 h after light	8.489186666666667	8.431610000000001	8.59195
12 h after light	8.36991	8.2654	8.56837
4 h after dark	8.083426666666668	7.847980000000001	8.2163
8 h after dark	7.988239999999999	7.68439	8.158539999999999
12 h after dark	8.148263333333333	8.02294	8.2523