[Correlation of certain parameters of solar winds and sudden cardiovascular deaths]

In day-to-day investigations the closest correlation with sudden cardiovascular mortality is displayed by the density of solar wind. An increased mortality is recorded after its brisk rise (in particular after potent proton phenomena) and paradoxically also in case of very low density value. Minor proton phenomena and eruptions with X-ray emission did not influence the mortality in the authors' group. This type of increased solar activity thus should not influence the prognosis of morbidity and mortality from cardiovascular diseases. When mean monthly density values of solar wind are correlated with mortality, the relationship is paradoxically indirect. The rate and temperature of the solar wind does not play any part due to its phase retardation after increased density. The correlation of mean annual values of all parameters of solar wind (i.e. density, velocity and temperature) and mortality is also indirect. There is no explanation so far for the increased mortality during low density levels during the interval between two rises in the course of day-to-day monitoring. For the short-term mortality prognosis thus potent proton phenomena can be used; the effect of very low values of solar wind density will have to be confirmed. The biogenic action of solar wind is obviously more complex than was formerly assumed.