condition mean min max 4 h after light 52.38135 47.8586 56.9041 8 h after light 34.686 34.5397 34.8323 12 h after light 24.58595 20.2565 28.9154 4 h after dark 27.2053 25.6308 29.7042 8 h after dark 42.49763333333333 38.2911 47.1937 12 h after dark 66.293 63.4654 69.7037