condition mean min max 0 h after light 77.81325 71.9404 83.6861 4 h after light 42.0252 37.0546 46.9958 8 h after light 37.8557 36.4499 39.2615 4 h after dark 35.78645 27.2879 44.285 8 h after dark 50.39525 49.8212 50.9693 12 h after dark 67.24345 53.6651 80.8218