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Fig. 16


Best-fit values and confidence intervals including statistical and systematic uncertainties at 1σ level of the column densities of the ions producing the reliable detected Galactic lines (diamonds and vertical bars). The upper limits obtained with ACIS are indicated with green horizontal bars. Values are derived without an assumption about the ionisation balance (solid lines) except for O iv, for which we additionally show the RGS1 values assuming CIE (filled rectangle).

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