NDBC THREDDS Server Catalog https://dods.ndbc.noaa.gov/thredds/catalog/data/stdmet/rtot2/catalog.html

Dataset Size Last Modified
     Folder  rtot2   --
         rtot2.ncml 302.0 bytes 2017-11-15T16:15:20.087Z
         rtot2h2004.nc 169.6 Kbytes 2004-12-31T20:00:00Z
         rtot2h2005.nc 280.2 Kbytes 2005-08-13T02:00:00Z

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