Find how audit covered the strata for a given table of votes and audits.
find.stratification(D, aud, strat.col)
Table of votes
Table of audit data
The column to use that identifies the stratification levels
Table of strata. For each stratum (row) the table has the name of the stratam, the number of precincts in the stratum, the number of audited precincts and percent of precincts audited.