All Tables

Table 1: Best-fit parameters and 68% confidence limits for various fits to the combined EPIC data. The basic model used was a power-law with neutral absorption fixed at the Galactic level ( $6.28\times 10^{20}$ cm^-2). Added to this was either i) a neutral, solar abundance absorber at z=0.351, ii) a neutral, solar abundance absorber at variable redshift, iii) an ionised, solar abundance absorber at variable redshift or iv) a neutral variable abundance absorber at z=0.351. Columns 1-6 are the fitted model, absorbing column density, redshift, abundance and ionisation parameter, and the $\chi ^2$ statistic over the number of degrees of freedom for the fit.