Examples of pre-ZTF SNe whose light curves have been recovered in the binned ZTF light curves. For each object we show the pre-ZTF g (dark green), r (dark yellow), and i (dark red) data points, as well as the binned ZTF detections (green, orange, red, respectively). The binned ZTF observations are in 25-day bins, with the width showing the beginning and end of each bin, and the shaded region shows its 1σ magnitude uncertainty. The pre-ZTF data was taken from Andrews et al. (2019) (SN 2017gmr), Brown et al. (2019) (SN 2017erp), Tartaglia et al. (2020) (SN 2015da), Zhu et al. (2023) (SN 2017egm), and Kuncarayakti et al. (2018) (SN 2017dio). None of the light curves are corrected for host extinction.