  A new tabulation of electronic factors is reported for electron conversion
for elements of Z from 5 to 126 and electronic factors for electron-positron
pair conversion for elements of even Z from 4 to 100. The electronic factors
for electron conversion, ${\Omega}_{CE}$(E0), were calculated using a modified
version of the CATAR program developed by Pauli and Raff with a
relativistic-Hartree-Fock-Slater approach (Pauli and Raff, 1975). The
electronic factors for electron-positron pair conversion, ${\Omega}_{IPF}$(E0),
were calculated using the model developed by Wilkinson (1969). The data tables
presented here cover all atomic shells up to R2 and transition energies from 1
keV to 6000 keV and from 1100 keV to 8000 keV for pair conversion. A comparison
with previous electronic factor tabulations is presented. Ratios of
experimental {\Omega}(E0) values for 83 E0 transitions in 8$\leq$Z$\leq$98 are
compared to this tabulation. Two examples of how to use the tabulation to
extract E0 strengths are also included.
