condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 4 h after dark 0.0657605 0.0 0.131521 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0