  Cosmic-ray proton and antiproton spectra were measured at mountain altitude,
2770 m above sea level. We observed more than 2 x 10^5 protons and 10^2
antiprotons in a kinetic energy range between 0.25 and 3.3 GeV. The
zenith-angle dependence of proton flux was obtained. The observed spectra were
compared with theoretical predictions.
