NOAA/PSL Catalog https://psl.noaa.gov/thredds/catalog/Datasets/gpcp/catalog.html

Dataset Size Last Modified
     Folder  gpcp   --
         precip.mon.1981-2010.ltm.nc 751.9 Kbytes 2018-02-01T17:04:07Z
         precip.mon.ltm.nc 751.9 Kbytes 2018-02-01T17:04:07Z
         precip.mon.mean.error.nc 16.73 Mbytes 2021-03-04T15:50:32Z
         precip.mon.mean.nc 17.29 Mbytes 2021-03-04T15:50:32Z
         Folder  v2.2/   --

NOAA/PSL at NOAA PSL see Info
THREDDS Data Server [Version 4.6.15-SNAPSHOT - 2020-01-28T04:01:10+0000] Documentation