Statistical estimates of frequency distribution of «basic triad» of precipitation in southern Russia

On the basis of data from 20 meteorological stations for 1961-2018 of the «basic triad» of precipitation (total, maximum daily precipitation and the number of days with precipitation of at least 20 mm ($NR20$)) for the territory of southern European Russia, a frequency analysis of seasonal and annual precipitation was carried out, a frequency distribution in absolute value, an integral distribution was obtained. The right-sided asymmetry of the empirical distribution function revealed a redistribution of the daily maximum precipitation and $NR20$ towards their increase.