condition mean min max 3 h after light 18.7825775 9.94403 28.8495 7 h after light 17.2508325 8.89339 27.2977 11 h after light 19.271625 10.479 32.6063 2 h after dark 20.425833333333333 10.4356 30.9843 6 h after dark 18.464835833333332 8.02673 31.5823 10 h after dark 19.899083333333333 11.6125 34.6673