condition mean min max 4 h after light 1.099885 1.05927 1.1405 8 h after light 1.0763280000000002 0.987206 1.16545 12 h after light 1.33671 1.32305 1.35037 4 h after dark 2.9114 2.01433 3.80847 8 h after dark 1.92368 1.83552 2.01184 12 h after dark 1.52093 1.47986 1.562