condition mean min max 4 h after light 44.81599 37.662482 51.969498 8 h after light 50.6349765 48.082183 53.18777 12 h after light 55.0949175 48.902786 61.287049 4 h after dark 47.5513195 45.324627 49.778012 8 h after dark 42.847377 41.509898 44.184856 12 h after dark 29.880054 29.880054 29.880054