condition mean min max 4 h after light 1.23657 1.04277 1.43037 8 h after light 0.9506955 0.934027 0.967364 12 h after light 0.806258 0.79851 0.814006 4 h after dark 1.4288433333333332 1.33639 1.59094 8 h after dark 1.1597156666666666 0.894677 1.49456 12 h after dark 1.2389663333333334 0.817349 1.52391