condition mean min max 4 h after light 8.802574 8.789723 8.815425 8 h after light 8.9554115 8.591868 9.318955 12 h after light 10.011828 7.685797 12.337859 4 h after dark 8.7880045 7.675937 9.900072 8 h after dark 9.534474 8.680368 10.38858 12 h after dark 9.624866 9.624866 9.624866