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The Methodology Behind the Measurements:
To determine individual tank storage levels, Genscape uses infrared images to detect storage levels in fixed roof tanks. Genscape flies over each terminal once a week to collect detailed storage level measurements. Flights are set to Thursday to correspond to EIA reporting periods to allow for direct comparison of inventory levels.
Genscape analyzes government records such as permits, maps, aerial and satellite imagery, land deeds, company filings, and many other sources to create its tank level database for each monitored terminal. Ground research supplements this information.