We present data on calculated shift coefficients for 186 Н2О lines shifted by the pressure of air, nitrogen, oxygen, and water vapor. The calculations have been performed using Anderson-Tsao-Curnutte (ATC) technique taking into account the intramolecular interactions, the polarization part of intermolecular potential, and the Maxwell distribution of molecules over relative velocity. Statistical analysis of the results calculated demonstrates a good agreement with the experimental data. The equations derived allow one to estimate the line shifts using calculated line half-widths. The comparative analysis of data obtained using the ATC and complex Robert-Bonamy formalism (CRBF) methods shows that the difference between the calculated results does not exceed 10%. The inverse problem on reconstructing the vibrationally dependent parameters of the isotropic part of polarization interactions from measured line shifts has been formulated for the first time.