Salinity data from 8 Mississippi Sound USGS stations, subsetted from mssnd_salinity
to only include the year 2019. All available readings were downloaded through
the USGS NWIS API using get_mssnd_salinity(), a wrapper for
dataRetrieval::readNWISuv(). Readings were also processed into daily min, mean,
and max. Station metadata is provided in siteInfo.