condition mean min max 3 h after light 6.91404 6.05087 7.97133 6 h after light 5.99843 5.36783 6.86682 9 h after light 6.77639 6.50516 7.29645 12 h after light 7.81698 7.3126 8.46033 3 h after dark 10.074446666666667 9.24814 10.6771 6 h after dark 10.120783333333334 9.66764 10.8155 9 h after dark 7.412646666666666 6.77547 7.96856 12 h after dark 6.16278 5.81245 6.51311