condition mean min max 0 h after light 7.426959999999999 6.96681 7.88711 4 h after light 3.7176 3.69361 3.74159 8 h after light 3.7742549999999997 3.40175 4.14676 4 h after dark 7.58228 6.61978 8.54478 8 h after dark 7.97861 7.03177 8.92545 12 h after dark 5.8746 5.80991 5.93929