Comparison of the yields of iron, magnesium, and calcium as a function of stellar masses from N13. The corresponding abundance ratios [Mg/Fe] and [Ca/Fe], and the supernovae explosion energies are also shown. The N13 table values for stars with M_proj < 30 M_⊙ at [FM/H] = − ∞ and −1.3 are shown with orange circles and blue crosses, respectively. The thick blue and thin green curves respectively show the adopted, interpolated values used in this work for the Pop II and Pop III stars. The dashed yellow lines indicate the mass ranges of stars ending as FSNe. The red curves show the yields and energies for PISNe with M_proj > 140 M_⊙ examined in this work from N13.