A NOTE ON SOLAR ACTIVITY AND PREDICTIONS

It is generally accepted that for the maximum of solar cycle 21 only a few statistical methods gave predictions near the observed value. Comparing predictions for cycle 22 ¹ with the observed data of sunspot numbers given in SESC PRF of SGD² a general same tendency as for the cycle 21 can easily be found. A research of properties of solar cycles would be helpful for the improving of our predictions.