condition mean min max 4 h after light 6864.7 6864.7 6864.7 8 h after light 8125.3 7589.5 8661.1 12 h after light 8934.7 8731.0 9138.4 4 h after dark 9825.6 9023.7 10627.5 8 h after dark 10075.75 9707.8 10443.7 12 h after dark 9419.349999999999 8750.8 10087.9