The Ocean Archive System searches our original datasets as they were submitted to us, not individual points or profiles. If you want to search and retrieve ocean profiles in a common format, or objectively analyzed fields, your better option may be to use one of our project applications. See: Access Data

OAS datatype Detail for PARTICULATE ORGANIC NITROGEN (PON)
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datatypes_id: 228
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Term: PARTICULATE ORGANIC NITROGEN (PON)
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Compare to: NITROGEN
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Metadata version: 2
Keydate: 2000-10-18 04:00:00+00
Editdate: 2014-03-04 18:55:50+00