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Gap Analysis
Kristy edited this page Aug 21, 2018
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The Gap Analysis works by calculating the difference between data or null points in the AMP501 dataset. If the gap is greater than a certain threshold, an error is thrown and a file is created documenting the gap in which the error occurred. The gap itself is calculated from the Duration code and Collection Frequency code (when applicable). The threshold is calculated as the Duration (or Collection Frequency) + 0.9*(Duration or Collection Frequency). For example, the gap threshold for an hourly NO2 monitor would be 1.9 hours. If there is a gap greater than 1.9 hours between data or null points, an error will be thrown.