Lawrence Berkeley National Laboratory

The Sudbury Neutrino Observatory (SNO) has been collecting data since November 1999. The study of whether or not the D{sub 2}O circulation affects the data is an important part of understanding how the SNO detector behaves. This report looks at several characteristics of the data to determine to what extent the D{sub 2}O circulation affects the data. We found that there is no evidence for any dependence of event rates in the cleaned data sets on the state of D{sub 2}O circulation.