condition mean min max 4 h after light 9.8391885 9.459383 10.218994 8 h after light 11.128933499999999 10.17349 12.084377 12 h after light 11.244815 10.218994 12.270636 4 h after dark 10.8188825 10.791216 10.846549 8 h after dark 9.5727505 9.485783 9.659718 12 h after dark 10.088096 10.088096 10.088096