The highest proportion waiting less than 26 weeks was in Swansea Bay health board (61.3%) and the lowest was in Cwm Taf Morgannwg (52.5%).
Roedd y gyfran uchaf a oedd yn aros llai na 26 wythnos ym mwrdd iechyd Bae Abertawe (61.3%) a’r isaf yng Nghwm Taf Morgannwg (52.5%).