NDBC THREDDS Server Catalog https://dods.ndbc.noaa.gov/thredds/catalog/data/stdmet/ocgn4/catalog.html

Dataset Size Last Modified
     Folder  ocgn4   --
         ocgn4.ncml 302.0 bytes 2017-11-15T16:15:19.928Z
         ocgn4h2010.nc 1.166 Mbytes 2010-12-31T23:50:00Z
         ocgn4h2011.nc 1.095 Mbytes 2011-05-18T17:40:00Z

National Data Buoy Center THREDDS Server at National Data Buoy Center see Info
THREDDS Data Server [Version 4.6.14 - 2019-07-23T11:04:31-0600] Documentation