footnote 1 ] Of the 180 items from which information was extracted, 115 were excluded as they had not obtained a high weighting score.
troednodyn 1 ] O’r 180 eitem y cafodd gwybodaeth ei hechdynnu ohonynt, eithriwyd 115 oherwydd nad oeddent wedi derbyn sgôr pwysoli uchel.