Field Definitions are Available Here
Granule
long
The size of the browse file.
8675
/AssociatedBrowseImageUrls/ProviderBrowseUrl/FileSize
/gmi:MI_Metadata/gmd:identificationInfo/gmd:MD_DataIdentification/gmd:graphicOverview/gmd:MD_BrowseGraphic/gmd:fileDescription/gco:CharacterString
Access Information (ECHO)