condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.057923 0.0 0.173769 12 h after light 0.16448933333333335 0.0 0.342629 4 h after dark 0.41559833333333335 0.0 0.926248 8 h after dark 0.194128 0.126263 0.315932 12 h after dark 0.23689133333333334 0.0 0.498272