  An empirical formula is proposed to calculate the Kondo temperature in
quantum point contacts from the Zeeman splitting. A similar formula was used in
the point-contact spectroscopy (PCS) method to obtain from the Zeeman splitting
of the Kondo peak in the characteristics of the classical Kondo alloys AuFe and
CuMn [1]. Using this formula, it is possible to find the Kondo temperature
taking into account the temperature of the experiment and Lande factor of the
compounds.
