Loss spectra of the secondary relaxation measured after verification along path A (triangles) and B (squares) for (a) PPGE, (b) PDE, (c) BMPC, (d) PPG400, (e) DGBEA, and (f) PVAc. The spectra measured after verification along path A are vertically shifted by shift factor (S.F.) to obtain the same value of maxima loss as those measured after verification along path B.