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Fig. 5
Γ vs. NH contours assuming the absorber to be at z = 0.0213 (dotted contours) and at z = 1 (solid lines). Note that both values are not consistent with, and exceed at more then 99% confidence level, the Galactic column (NH = 4.98 × 1020 cm-2, Dickey & Lockman 1992).
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