condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.97622 0.0 1.5574 4 h after dark 0.6568076666666667 0.382747 0.85916 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0