condition	mean	min	max
4 h after light	6.3932	6.121	6.652989999999999
8 h after light	6.384406666666667	6.22886	6.652260000000001
12 h after light	7.2158066666666665	7.1475100000000005	7.29674
4 h after dark	7.276013333333333	7.263999999999999	7.296189999999999
8 h after dark	7.858576666666667	7.70315	7.9933
12 h after dark	8.426549999999999	8.223469999999999	8.594289999999999