Compilation of $2\rhos/(\pip+\pim)$ and $\rhos/\pim$ measurements at different energies. The ratios are from measurements in $e^{+}e^{-}$ collisions at $\rso=10.45$ GeV , $29$ GeV  and $91$ GeV ; pp collisions at $6.8$ GeV , $19.7$ GeV , $27.5$ GeV , $52.5$ GeV  and $200$ GeV ; $K^{+}$p collisions at $7.82$ GeV  and $\pim$p collisions at $19.6$ GeV . The ALICE measurement in pp collisions at \rs is shown with a red marker. The total uncertainties are shown as bars.