condition mean min max 4 h after light 21.7083 17.9011 25.5155 8 h after light 30.01685 29.6167 30.417 12 h after light 27.9341 25.2356 30.6326 4 h after dark 49.39475 49.2881 49.5014 8 h after dark 33.7423 31.6804 35.8042 12 h after dark 39.73565 38.7048 40.7665