Just before the pandemic in January 2020, a little under 7,000 patients waited longer than 12 hours, the highest since current reporting began in 2012.
Yn y cyfnod cyn y pandemig ym mis Ionawr 2020, roedd ychydig o dan 7,000 o gleifion wedi aros am fwy na 12 awr, y nifer uchaf ers dechrau cofnodi hyn yn 2012.