PIE LTER, Year 2020, 15 minute interval, water quality measurements of water column temperature, salinity, oxygen, and depth near the mouth of Plum Island Sound, Massachusetts

Year 2020, 15 minute measurements of water column temperature, salinity, oxygen and depth in Plum Island Sound at the Ipswich Bay Yacht Club, Ipswich, MA. There were sifgnificant datalogger power, radio telecommunication and sonde cabling corrosion issues during the Covid-19 Spring - Fall of 2020. There are many missing data time periods due to issues and some limited field work capabilities due to Covid working restrictions.