{"id":"source_coverage_matrix","columns":[{"name":"family_id","type":["string","null"]},{"name":"scope","type":["string","null"]},{"name":"artifact_count","type":["integer","null"]},{"name":"artifact_examples","type":["string","null"]},{"name":"coverage_status","type":["string","null"]},{"name":"outputs","type":["string","null"]},{"name":"limitation","type":["string","null"]},{"name":"classification_rule","type":["string","null"]},{"name":"overlap_allowed","type":["string","null"]}],"empty_values":"CSV empty fields and JSON null mean unavailable; an explicit zero is numeric zero.","source_reference":"Source URL plus page, row, column, or line fields where supplied. Financial columns keep their own budget stages."}