Category	URL
_null	http://ismn.erddap.neracoos.org/erddap/categorize/standard_name/_null/index.xhtml?page=1&itemsPerPage=1000
latitude	http://ismn.erddap.neracoos.org/erddap/categorize/standard_name/latitude/index.xhtml?page=1&itemsPerPage=1000
longitude	http://ismn.erddap.neracoos.org/erddap/categorize/standard_name/longitude/index.xhtml?page=1&itemsPerPage=1000
time	http://ismn.erddap.neracoos.org/erddap/categorize/standard_name/time/index.xhtml?page=1&itemsPerPage=1000