condition mean min max 4 h after light 1.94516 1.60939 2.28093 8 h after light 2.39341 2.18903 2.59779 12 h after light 2.901605 2.47689 3.32632 4 h after dark 4.498306666666666 3.86177 4.89378 8 h after dark 3.684953333333333 3.31837 4.34934 12 h after dark 3.167413333333333 2.54188 3.83116