Fig. 8
Contour plots between the column densities of the variable cold and warm absorbers. The colours correspond to different observations (1st black solid, 2nd red dashed, 3rd green dotted, 4th blue dash-dotted). The contours correspond to 1σ, 2σ, and 3σ levels. Left: results obtained with tModel B. Right: results obtained with Model D with the highly-ionised warm absorber allowed to vary.
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