condition mean min max 0 h after light 0.497822 0.0 0.995644 4 h after light 1.007217 0.326634 1.6878 8 h after light 1.8216299999999999 1.34893 2.29433 4 h after dark 0.81664 0.0 1.63328 8 h after dark 1.3092445 0.987089 1.6314 12 h after dark 2.128875 1.94183 2.31592