condition	mean	min	max
4 h after light	7.35367	7.210960000000001	7.42616
8 h after light	7.26358	6.70264	7.54712
12 h after light	7.372293333333333	6.9281	7.65062
4 h after dark	7.303826666666667	6.6184199999999995	7.760680000000001
8 h after dark	7.262983333333334	6.891780000000001	7.57108
12 h after dark	7.536826666666666	7.250210000000001	7.965889999999999