(Left and right panels) The intensity and EW of the resolved (σ = 0.22 keV) Fe Kα component (the narrow Fe Kα component is assumed to have σ = 0.027 keV and be constant) as a function of the 3–10 keV flux. Blue stars and red hexagonals show the best fit results of the 10 observations of the 2009 campaign and of the previous XMM-Newton observations, respectively. Dashed and dot dashed lines show the constant intensity and constant EW cases, respectively. The best fit relation (dotted line) is consistent with the resolved component of the Fe Kα line having constant EW. The intensity of the resolved component of the Fe Kα line follows the 3–10 keV continuum variations with a 1-to-1 relation.