This was primarily because the 60-day period for transactions in February and March 2020 extended into the lockdown period, and was impacted by the following factors:
Y rheswm pennaf dros hyn oedd bod y cyfnod 60 diwrnod ar gyfer trafodiadau Chwefror Mawrth 2020 wedi ymestyn i'r cyfnod clo, ac effeithiwyd arno gan y ffactorau canlynol: