Fig. 9.

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Sensitivity of the simulations to the assumed parameter for the first year of DDF data, faint quasars log L3000 = 44.7. Top panel: alternative values of the line EWs. Second panel: assuming a larger photometric error. Third panel: at shorter timescales for the frequency breaks of the power spectrum. Lowest panel: at lower variability amplitude (see Sect. 3.4 for details).
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