condition mean min max 4 h after light 8.177056 7.966786 8.387326 8 h after light 8.6329755 8.387326 8.878625 12 h after light 8.231137 7.800331 8.661943 4 h after dark 7.434278000000001 6.528431 8.340125 8 h after dark 7.838665499999999 7.626746 8.050585 12 h after dark 10.647725 10.647725 10.647725