condition mean min max 4 h after light 9027.4 9027.4 9027.4 8 h after light 9852.45 9684.7 10020.2 12 h after light 11483.35 11214.7 11752.0 4 h after dark 10564.2 8963.8 12164.6 8 h after dark 8914.8 8697.9 9131.7 12 h after dark 8430.2 7393.2 9467.2