The time since B maximum of secondary NIR peak (lower panel) and the absolute magnitude of secondary peak (upper panel) versus the Δm₁₅(B). SN 2008fv is represented with large circles, the data from literature with small open squares. The Pearson coefficients R is also shown for each panel with the resulting best fit of data (solid   line). For the timing of secondary maximum in J-band, we also plot the prediction of Kasen (2006) models (solid   line   and   open   circles).