condition mean min max 0 h after light 0.7351 0.587451 0.882749 4 h after light 0.6122075 0.548688 0.675727 8 h after light 1.0331855 0.920221 1.14615 4 h after dark 1.0354135 0.868847 1.20198 8 h after dark 1.16221 1.10892 1.2155 12 h after dark 0.8231175 0.717354 0.928881