Redshift dependence of the measured cosmological parameters obtained from Flagship using different covariance prescriptions. The blue points show results for fits to the data vector for the perfect reconstruction case using C^data and are the same as in Fig. 8. Black points are for fits to the same data vector but using the full covariance C^tot. Light red points are for the fit to the realistic reconstruction case when using C^tot. The use of the full covariance C^tot greatly reduces the statistical uncertainty but can introduce systematic offsets when combined with the use of reconstruction.