Variability between two WFC F555W observations for objects within 10^{﹩\arcsec﹩} of NGC 1313 X‐2. The error bar size is equal to ﹩\sigma _{\Delta m}=( \delta m^{2}_{1}+\delta m^{2}_{2}) ^{1/2}﹩. The error bars are generally smaller for brighter objects; occasionally bright objects have large error bars because they are in unresolved stellar fields. The counterpart for NGC 1313 X‐2 is highlighted by a large circle. The histogram is for the number of objects per 0.25 in ﹩( m_{1}-m_{2}) / \sigma _{\Delta m}﹩. The dotted lines denote ﹩m_{1}-m_{2}=\pm 4\sigma _{\Delta m}﹩.