Typical bather number days: Undertake bather surveys for four hours on at least 20 days to establish a reliable usage pattern and avoid one-off anomalies.
Nifer arferol o ymdrochwyr mewn diwrnod: Cynhaliwch arolygon ymdrochwyr am bedair awr ar 20 diwrnod o leiaf i sefydlu patrwm defnydd dibynadwy ac osgoi anghysondebau untro.