Light curves from uvm2 for all four UV transients. The red points are detections and the black points are non-detections. The errors bars are the total 1σ (statistical and systematic) errors as obtained using the uvotsource tool. All data points are corrected for cluster background by subtracting the mean cluster flux at the source position when the sources are not detected. The black dashed lines are the averages of the black points after correction (thus fixed at a flux of 0).