The data we have for relative income poverty comes from the Households Below Average Income (HBAI) report published by the Department of Work and Pensions (DWP).
Daw'r data sydd gennym ar gyfer tlodi incwm cymharol o'r adroddiad Aelwydydd islaw'r incwm cyfartalog (HBAI) a gyhoeddwyd gan yr Adran Gwaith a Phensiynau.