condition mean min max 4 h after light 5.62327 5.50272 5.83584 8 h after light 5.497023333333334 5.44793 5.54868 12 h after light 5.37995 5.27402 5.5780400000000006 4 h after dark 5.54383 5.48651 5.61209 8 h after dark 5.482246666666667 5.20892 5.63431 12 h after dark 5.480943333333333 5.16906 5.73971