68%, 90%, and 99% confidence contours for spectral fits with NS hydrogen atmosphere models (for ﹩M=1.4\,M_{\odot }﹩, ﹩R=10﹩ km, and two values of magnetic field B) to the combined PSPC and GIS2 spectra. The dashed lines in the upper panels delineate the distance range, ﹩d=( 1.9﹩–2.5) kpc, determined from radio observations. The dashed lines in the lower panels show best‐fit ﹩n_{\mathrm{H}\,}﹩ and ﹩T_{\mathrm{eff}\,}﹩ for the upper and lower distance limits.