Scatter plots of average pEW values for the SE SNe in our sample. He I λ7065 vs. He I λ5876 calculated between +10 d and +20 d, along with the best-fit relation pEW_λ5876 = 30 + 1.3 × pEW_λ7065 as a dashed line (left panel). O I λ7774 vs. He I λ7065 at +25 d to +45 d with the best-fit relation pEW_λ7065 = 1.0 × pEW_λ7774 (right panel). An illustrative set of SNe have been labeled by their abbreviated (i)PTF names in both panels. Yellow diamonds indicate all objects showing very broad LCs.