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 0.078595 0.0 0.15719 4 h after dark 0.198189 0.0 0.372686 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0