In the ExpDBase program one can combine in one set the spectra measured at different conditions, i.e. temperature, pulse voltage or duration, etc. A user can choose from these spectra one peak which evolution as a function of the given parameter wishes to follow. Such selection can be saved in the peak file. These data can be further analysed by other programs or read into the TrapView program for comparison with the trap library. The peak file is also the ASCII text file but it has the structure different from that described above. One peak file can contain many peak selections and each of them starts with the line: Peak information for Trap n, and ends with the line with the text: End of this trap. Each line has data related to one peak. The lines starting with the exclamation character “!” are comments saying from which file this particular peak has been taken and giving the sample identification. The data is organised in five columns each separated by the coma. In these columns are: (i) the measurement temperature (in K), (ii) emission rate for the given peak (in Hz), (iii) the peak amplitude (in pF), and then (iv) the filling pulse duration (in sec), and (v) voltage (in V).