Some of the estimators may use special input tables of estimation data. These
often are subsets of the baseyear data, or data just like the baseyear data but
collected from a different source. In general, the schema for the estimation
data is the same as for the baseyear data, e.g. the jobs_for_estimation
table uses the same schema as the jobs table.
In the PSRC application, the input tables for estimation are:
Should this information should be specified in the ``estimate'' portion of the configuration used by the estimators?