what tables are approaching the need for a freeze vacuum? below 70% should be safe

freeze.sql

SELECT
   freez::int,age(relfrozenxid) as txns,
   ROUND(100*(age(relfrozenxid)::bigint/freez::float)) AS perc,
   n.nspname as "schema"
   , relname::text as "name"
FROM
   pg_class c
   LEFT JOIN pg_namespace n on n.oid = c.relnamespace
   JOIN (SELECT setting AS freez FROM pg_settings WHERE name = 'autovacuum_freeze_max_age') AS foo
     ON (true) WHERE relkind='r' order by perc ;