Mae amseroedd aros diagnostig dros wyth wythnos, er cynnydd bach y mis hwn, 14% yn is nag ym mis Ionawr 2021 a gwelliant o 22% ar sefyllfa Mai 2020.
Diagnostic waits over eight weeks, although a slight increase this month, are 14% lower than in January 2021 and a 22% improvement on the May 2020 position.