Note that vs. elevation is not symmetric about zenith, as sunrise occurred near the middle of the experiment. Now, the values of g are adjusted regularly, so that the observed correlation coefficient converts to the proper number of Janskys for 3C286 or 3C48. The mean value was 1.022, with a standard deviation of 0.011. The ALC's constrain to be near 3 V, so this is nearly a constant value. The factor of 15 is strictly an electronics gain factor.
Errors are due to fluctuations in , and in .
Of these, fluctuations in should dominate. Therefore, estimating the value of from the values in the TY table should be accurate to for a given antenna, and might be as accurate as a few percent for an average over all antennas. Figure 4 shows the results of performing this conversion on the TY table for the B configuration experiment in 1994. The rms is strictly the data scatter, and doesn't take into account the possible fluctuations in . Well, to check on this, I've gone back through his notes.