In effect, the Tcal values were adjusted to become Tcal(LCP)=6.00 and Tcal(RCP)=5.25. The gains were corrected for the absorption tau=0.072, and the efficiencies were converted to gain using Gain(K/Jy) = 2.845 * Eff (for a 100-meter diameter circular aperture).
The peak gain was about 1.22 K/Jy in both polarizations.
We fit a polynomial in zenith distance to the gain data of the form:
Gain = 1.22 * (A0 + A1*ZD + A2*ZD**2 + A3*ZD**3)
(Zenith distance in units of degrees)
This functional form is used for compatibility with the
VLBA data base of gain data for the VLBA antennas.
The data and fit to the normalized gain (Gain/1.22) are shown
in the plot.