Field Definitions are Available Here
Collection
The most recent update occurred on the data provider's database. This date is provided by the data provider.
2009-08-19T11:56:11.670Z
/LastUpdate
/gmi:MI_Metadata/gmd:identificationInfo/gmd:MD_DataIdentification/gmd:citation/gmd:CI_Citation/gmd:date/gmd:CI_Date/gmd:date/gco:DateTime
Quality Information (ECHO)