Department, Whitin Observatory, Wellesley College, Wellesley, MA 02181
observed 22 GHz water maser emission for T UMa at Haystack Observatory about
once a month since December 14, 1986. The data have been compiled and graphed
as a function of time and compared to the visual data compiled by the AAVSO.
The variablilty of the maser emission and the visual light is comparable, but
the maser emission shows a phase lag of 0.35 phase with respect to the visible.