condition mean min max 0 h after light 1.547905 1.32813 1.76768 4 h after light 1.994705 1.88808 2.10133 8 h after light 1.555515 1.31164 1.79939 4 h after dark 2.391125 2.03344 2.74881 8 h after dark 2.40175 1.90192 2.90158 12 h after dark 1.3799100000000002 1.17687 1.58295