Abstract: A method for evaluation of measurement signals of a level gauge, which works according to the transit time principle, comprising the steps of transmitting a transmission signal towards a filling material; receiving an echo signal of the transmission signal; determining a fill level of the filling material according to the transit time principle of the echo signal; determining at least one parameter of the echo signal; and storing the values of the at least one parameter and the corresponding fill level. The at least one parameter is a phase position of the echo signal and/or a rate at which a height of the filling material in a tank changes and/or a change in amplitude of the echo signal and/or a temperature of the filling material and/or a temperature change of the filling material and/or a change in the amplitude variation of the echo signal.