Similar to Fig. 6, but for V883 Ori. Top two panels present the observations at 225 GHz, which were gain calibrated by the observations of quasar 0609-157. Bottom two panels present the observations at 272 GHz, which were gain calibrated by the observations of quasar 0530+135. Quasar 0609-157 happened to be flux monitored by SMA at 224−225 GHz on the dates of our 225 GHz observations, May 27 and June 17 of 2008. We applied the tabulated flux values of 0609-157 on these two dates instead of applying our own measurements, since the measurements made by Mark Gurwell are well vetted. We scale the 272 GHz measurements to 225 GHz by multiplying a factor of 0.46 (i.e., assuming spectral index α ~ 4.0, and overplot to the top panel. We adopted a relatively large (25%) potential absolute flux error for the measurements on August 27, 2014, due to the large phase dispersion during the observations.