condition mean min max 4 h after light 0.8268070000000001 0.696469 0.957145 8 h after light 0.664697 0.553916 0.775478 12 h after light 0.7872975 0.753772 0.820823 4 h after dark 1.74878 1.45562 2.04194 8 h after dark 1.515235 1.3158 1.71467 12 h after dark 1.42145 1.10035 1.74255