condition mean min max 4 h after light 15.986149999999999 15.7537 16.2186 8 h after light 12.7697 12.3407 13.1987 12 h after light 11.405550000000002 10.4212 12.3899 4 h after dark 16.571933333333334 13.7043 19.5375 8 h after dark 16.191566666666667 11.9943 21.1597 12 h after dark 18.534399999999998 17.3955 19.4391