pEW and FWHM values of Hα line and He I λ5876 for 0–10 days and 10–20 days. The markers are established by SN type: SNe IIb are shown as blue triangles, SNe II as red circles, and SNe 87A-like as green squares. The colour bars on the right side indicate the SN phase. The pEW measurements are in the top panels, and the FWHM measurements are in the bottom panels. In the left panels, we show the measurements within 0–10 days and in the right panels, between 10–20 days.