Left: kernel density estimate (KDE) of the difference between the magnitude of the H17 R/r-band template and the magnitude of the SNe Ibn in the total sample of this work (61) normalized by the uncertainty of the H17 template, in 10-day bins. The white dots correspond to the median of each KDE, while the black solid bars the interquartile range, i.e., the 25% and 75% percentiles. Right: same as left panel, for the normalized H17 (nH17) template.