condition mean min max 4 h after light 4.370605 3.76998 4.97123 8 h after light 5.32089 4.81143 5.83035 12 h after light 4.8653949999999995 4.70918 5.02161 4 h after dark 6.75009 6.18626 7.19803 8 h after dark 5.603586666666667 5.46878 5.77773 12 h after dark 5.182826666666667 4.71837 5.62887