condition mean min max 2 h after light 9.627643333333333 8.84551 10.0438 6 h after light 9.11359 8.77937 9.75602 10 h after light 9.246573333333334 8.81031 10.0336 2 h after dark 11.286999999999999 10.9046 11.7747 6 h after dark 15.399633333333334 14.7806 16.0063 10 h after dark 14.4478 13.8484 14.7992