||This is one of the sounding datasets developed for The Upper Missouri River Basin Pilot Project (UMRBPP). The dataset consists of research soundings from Custer, South Dakota and contains vertical profiles of pressure, temperature, dew point, humidity, U and V wind components, total wind speed and direction, and latitude and longitude taken every 10 seconds after the sondes release time. The soundings were typically released at 00 and 12 UTC, but there were occasional releases at 06 and 18 UTC. Note: since the files are loaded in the database using the actual release times, use the hour just before or the hour a couple hours before UTC release time,when attempting to browse this dataset. UCAR/JOSS performed an automated quality control on this data. See the README for further information.