Standards were established on how to observe, taking three measures of the variable and one of a check star to monitor the constancy of the check star. These standards have not changed and the reduction program used today is the same one we started with. We do not archive observations with a standard error of greater than 0.02 magnitude.
Most observations are much smaller than that.
We now have 18,757 observations in the Archive. Over the years 37 observers have contributed data, and 16 are currently active. We have been producing data at a rate of from 2500 to 2900 observations per year. As Chair of the committee I communicate with prospective observers, lead them through the training as necessary to help them become successful PEP observers. Then I watch over the data as it comes in and if I see an apparent problem, I communicate with that observer and explain what needs to be changed.