Category	URL
_null	http://erddap.factnetwork.secoora.org:80/erddap/categorize/standard_name/_null/index.xhtml?page=1&itemsPerPage=1000
depth	http://erddap.factnetwork.secoora.org:80/erddap/categorize/standard_name/depth/index.xhtml?page=1&itemsPerPage=1000