condition mean min max 4 h after light 16.581328499999998 14.577886 18.584771 8 h after light 16.025296 15.56844 16.482152 12 h after light 16.0849905 15.687829 16.482152 4 h after dark 17.354038000000003 16.909856 17.79822 8 h after dark 17.3695075 15.742467 18.996548 12 h after dark 16.482152 16.482152 16.482152