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

Dataset Size Last Modified
     Folder  gpcc   --
         Folder  combined/   --
         Folder  first_guess/   --
         Folder  full_v2018/   --
         Folder  full_v6/   --
         Folder  full_v7/   --
         Folder  monitor/   --

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