From compilations of K R mass histograms containing 25 080@ mesons and pp mass histograms containing 33 260 w mesons we determine the 6 and the w masses. In our fits the widths of the resonances are fixed and the mass and the resolution are free parameters. We then extrapolate to zero resolution with Orear's effective variance method which takes into account both mass and resolution errors. The results are m@= (1019.67 f 0.17) MeV and mu = (782.5 1 f 0.82) MeV, where the errors are almost entirely systematic.
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