Ratio of the cross section for the production of K0S to that for μ+μ− between 3.6 and 31.6 GeV. The average number of K0 per hadronic event is also provided for some energies, together with the kaon spectrum at 9.4 and 31.6 GeV. N.B. The point at 9.45→9.456 GeV is from the Υ(1S) resonance. Beam energy must be specified as analysis option "ENERGY" when rivet-merging samples.