condition mean min max 4 h after light 57.9089 55.6788 60.139 8 h after light 30.31805 27.2371 33.399 12 h after light 33.69865 30.6724 36.7249 4 h after dark 50.9267 48.1566 52.3128 8 h after dark 62.54266666666667 57.7307 67.8019 12 h after dark 69.77966666666667 66.5001 71.7673