condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.0 0.0 0.0 9 h after light 0.0 0.0 0.0 12 h after light 0.065362 0.0 0.261448 3 h after dark 0.13437933333333332 0.0 0.403138 6 h after dark 0.09229033333333332 0.0 0.276871 9 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0