Evidence could include research data, published data, consultation exercises and/or surveys, market analysis/assessments, waiting lists for services/facilities etc.
Gallai tystiolaeth gynnwys data ymchwil, data cyhoeddedig, ymgynghoriadau a/neu arolygon, dadansoddiadau/asesiadau o'r farchnad, rhestrau aros ar gyfer gwasanaethau/cyfleusterau ac ati.