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Fig. 4.

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(a) One random instance of n = 20 events, for both linearly detrended data (black line) and an anomaly from a 21-day moving average (blue line). Differences between these two curves show the possible influences of intermediate timescales on the data. (b) The differences between these curves at t 0 for 10,000 random instances of n = 20. The histogram shows a 1σ value of 0.1%, a non-trivial difference which may influence the outcome of a composite analysis.

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