condition mean min max 4 h after light 9.712545500000001 9.420617 10.004474 8 h after light 9.1135815 8.626132 9.601031 12 h after light 8.965371 8.651618 9.279124 4 h after dark 9.0973095 8.294547 9.900072 8 h after dark 36.1655235 8.986929 63.344118 12 h after dark 9.91153 9.91153 9.91153