Figure 3.Correlation between frequency of the spectral maximum of microwave bursts fm and the same parameter of proton energy spectra δ= lg (J10/J100). The rest is as in Fig. 1. The following events are marked by numbers: 60 Ц 20.02.2002, 63 Ц15.07.2002, 81 Ц 20.01.2005.