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A term used to designate a group of COVERAGE-GEOSPATIAL-FEATUREs that are meaningfully gathered because of a common, organizationally-predefined relationship among them. Meaningful groups include the following types. Spatial collections, which include tiles gathered contemporaneously to cover a large area that can not be handled in one COVERAGE-GEOSPATIAL-FEATURE because of physical data storage or sensor limitations. Invariable area collections, which always cover the same area. They can be: --Time Series collections, which contain features collected at different times. --Collections of features having the same characteristics, but not necessarily collected over time. Example characteristics include soil humidity, soil temperature, and soil pH. |