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DEP WTC General Correspondence Form

Machine-extracted title · confidence 70%

Generic form or header page from the Department of Environmental Protection regarding general World Trade Center notices and requests.

NYC-WTC_000149798–000149882

Folder label: “GENERAL 2

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Scanned page image, NYC-WTC_000149831
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o o "0 o c —X CT <O 00 GO Ripley K Analysis o' "D o 03

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• A formal test for significance of K(r) or L(r) has not been developed • Approximate test for significance by constructing simulation envelopes - 9,999 patterns of the PCMe exceedances were simulated - K was calculated for 10 distances (r) (at 100-meter intervals) for each of the 9,999 patterns - The 5% and 95% of the 9,999 simulated values were plotted to form the simulation envelope - If the observed Ripley K function is located within the simulation envelope, fail to reject null hypothesis of spatial randomness

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NYC-WTC_000149831Source: NYC Law Department, mirrored locally

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