We have averaged the Zn(0001) LEED intensity profiles measured by Baker and Blakely at constant values of the scattering vector to obtain the single−scattering component of the intensity. This averaged intensity was analyzed using kinematictheory to obtain information about some of the important physical parameters of the surface region. The effect of excess surface mean−square vibrational amplitudes consistent with the measured Debye−Waller factors are included in the analysis, as are the geometrical corrections to the measured intensity due to changes in spot photometer position with respect to the grid optics. The inner potential is 14±2 eV and nearly constant for incident electron energies between 20 and 300 eV, the electron total attenuation coefficient lies between 0.3 and 0.4 Å−1 for the same energy range, and the outer layer of atoms is contracted from the bulk spacing by 0%−2% at 70 K.