condition mean min max 4 h after light 44.36915 37.6247 51.1136 8 h after light 38.63685 35.9517 41.322 12 h after light 36.2462 35.1569 37.3355 4 h after dark 47.8909 46.3737 48.7376 8 h after dark 59.717 55.4681 62.0611 12 h after dark 46.3898 42.7921 49.1583