Confidence contours (68% and 90%) for the PL fit to the compact PWN and extended PWN for fixed ﹩n_{\mathrm{H}\,,22}=1.0﹩. The PL normalization is in units of 10⁻⁵ photons cm⁻² s⁻¹ keV⁻¹ at 1 keV. The dashed curves are the loci of constant unabsorbed flux in the 0.5–8 keV band; the flux values near the curves are in units of 10⁻¹³ ergs cm⁻² s⁻¹.