2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/194605A set of new, precise data have recently been made available by the NA49 collaboration for charged pion production in proton-proton and proton-Carbon reactions at 158 GeV. The current paper compares this new data to five currently available arithmetic parameterizations. Although a precise fit is not expected, two of the parameterizations do not work very well but the other three are able to provide a moderately good, but not precise fit to the proton-proton data. The best two of these three parameterizations are scaled to the proton-Carbon data and again provide a moderately good, but not precise fit.11 pages, 13 figures, Accepted for publication in Physical Review DHigh Energy Physics - PhenomenologyNuclear Theorytext