On 3/8/13 3/8/13 * 1:12 PM, "Simon Spero" <[log in to unmask]> wrote: It seems that the total/overall counts are in terms of records, but the subfield counts are in terms of fields occurrences (if a record has two 650 fields with a $a, the subfield count will be increased by two, and presumably the holdings count by twice the number of holdings) . Right. Fields are counted once per record, but subfields by number of occurrences. Sorry about the confusion. Roy