condition	mean	min	max
4 h after light	9.2064935	8.933253	9.479734
8 h after light	8.7743885	8.766202	8.782575
12 h after light	7.946488499999999	7.81196	8.081017
4 h after dark	9.001650999999999	8.964808	9.038494
8 h after dark	8.867188	8.638963	9.095413
12 h after dark	8.517419	8.517419	8.517419