alt Catalog http://mtarchive.geol.iastate.edu/thredds/catalog/mtarchive/2012/09/21/gempak/profiler/catalog.html

Dataset Size Last Modified
     Folder  profiler   --
         20120921_pro.gem 2.438 Mbytes 2012-09-22T08:00:11Z
         2012092112_6min.gem 4.290 Mbytes 2012-09-22T08:00:12Z
         2012092100_6min.gem 4.159 Mbytes 2012-09-22T08:00:11Z

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