xrchart_write_xlabel (cr, geom, _("Observed Value"));
xrchart_write_ylabel (cr, geom, _("Dev from Normal"));
xrchart_write_xscale (cr, geom, dnpp->y_min, dnpp->y_max, 5);
xrchart_write_xlabel (cr, geom, _("Observed Value"));
xrchart_write_ylabel (cr, geom, _("Dev from Normal"));
xrchart_write_xscale (cr, geom, dnpp->y_min, dnpp->y_max, 5);