condition mean min max 2 h after light 7.68826 7.41507 8.16563 6 h after light 8.534403333333334 7.96866 8.8752 10 h after light 9.07071 8.731 9.50553 2 h after dark 8.684946666666667 8.27462 8.94058 6 h after dark 8.18471 7.77716 8.50741 10 h after dark 7.71955 7.35564 8.09923