Abstract
The empirical level of research in the experimental sciences always involves description of what is found by observation and experimentation. These descriptions most often take the form of tables of various sorts . In the process of compiling tables of functions, the method of smoothing-out data plays a significant role. It is often performed by graph procedures. This work results in the formulation of laws, general relationships, which are clothed, in mathematical natural science, in the form of empirical or semi-empirical equations