Abstract
The proton spectra and their variations during the several large solar particle events in 22-nd solar cycle (29.09.89, 19.10.89, 24.10.89, 24.05.90 and 15.06.91) were obtained within the wide energy range. The data of spacecraft measurements and neutron monitors of the world-wide network have been used to analyse the energy and temporal dependencies of proton increases. All peak spectra reveal the similar behaviour in the low energy range and significantly differ at energy > 1 GeV.
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