ទិន្នន័យគុណភាពខ្យល់ផ្តល់ដោយ៖ the Air Quality in Wales (airquality.gov.wales)
ចំណាំថាការវាស់វែង PM 2.5 (ភាគល្អិតល្អ) ត្រូវបានយកចេញពីស្ថានីយ៍៖ Port Talbot Margam and the measurements for PM10 (respirable particulate matter), O3 (ozone), NO2 (nitrogen dioxide) and SO2 (sulfur dioxide) are taken from the station: Port Talbot Little Warren