condition mean min max 4 h after light 1.955625 1.71156 2.19969 8 h after light 4.01895 3.90139 4.13651 12 h after light 4.12636 3.8985 4.35422 4 h after dark 3.87037 3.75538 4.01486 8 h after dark 2.60146 2.37879 2.77882 12 h after dark 1.9286333333333334 1.60428 2.09416