Aperture photometry per frame with apertures of 8 (top panel), 13 (middle panel), and 32 (bottom panel) pixels in radius for the mean background subtraction (blue) and PCA (orange) background subtraction with a mask of 9, 13, and 32 pixels in radius. The gray boxes show the groups considered as outliers and not used for mean retrieval and RMS for both the mean and PCA background subtraction. The calibration factor for sensitivity is 1 ADU for 0.3 mJy.