The events passing criterion IV, as well as our selection criteria of ﹩{t}_{\mathrm{FWHM}}﹩ and χ ². The yellow points are all detections passing criterion IV and with ﹩{t}_{\mathrm{FWHM}}\geqslant 1000﹩ days. The green points are all detections passing criterion IV and with ﹩{t}_{\mathrm{FWHM}}\lt 1000﹩ days. The magenta points are variables from Fliri et al. (2006). The blue points are novae from Lee et al. (2012). The red points with black dot are the 12 microlensing events presented in this paper.