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Fig. 4
Simulations of C iv/C (green) and N v/N (red) versus time for one lightcurve in the sample. The solid lines are for a density nH = 103.5 and the dashed lines are for nH = 102.5. The black line is the ionization rate per particle for C iv and is propotional to the simulated lightcurve for this example.
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