Left: XMM-Newton PN spectra for GSN 069  along with the best-fitted models (top panel). The corresponding data/model ratios are shown in bottom panel. The inset panel shows the joint 68% and 90% confidence contours of the photon index vs. normalized flux for the hard power-law component. Right: the same as left but for the Swift data. We present in each panel the detailed spectral models for the XMM 2014 (left) and Swift 2011 (right) data.