condition mean min max 4 h after light 0.5181805 0.455436 0.580925 8 h after light 1.2290345 0.981609 1.47646 12 h after light 1.9689299999999998 1.93455 2.00331 4 h after dark 1.6579833333333334 1.30235 1.91444 8 h after dark 1.2249033333333335 1.11827 1.32406 12 h after dark 0.786835 0.73181 0.875199