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Fig. 8.
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C IV line profile in NGC 3227 observed with HST/COS on 2000-02-08 (blue), 2010-05-10 (pink), 2019-11-15 (green), and 2019-12-05 (purple). Local continua are subtracted here. Both the 2000-02-08 and 2019-11-15 line profiles are scaled by 0.6. The vertical dashed lines mark the C IVλλ1548, 1550 doublet.
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