The percentages reported below are from all the trials carried out (n = 77), although it is worth noting that 1 participant only completed 5 trials.
Mae’r canrannau a nodwyd isod yn seiliedig ar yr holl dreialon a gynhaliwyd (n = 77), ond mae’n werth nodi mai dim ond mewn pum treial y gwnaeth un cyfranogwr gymryd rhan.