If there are rise or falls in lower rate disposals, we can identify how this change is made up, and if for example the waste has been disposed of elsewhere in Wales.
Os bydd cynnydd neu ostyngiad mewn gwarediadau cyfradd is, gallwn nodi sut mae’r newid hwn yn cael ei ffurfio, ac a yw’r gwastraff, er enghraifft, wedi’i wared mewn man arall yng Nghymru.