The Air Quality Standards (Wales) Regulations 2007 No. 717 (W. 63)

SCHEDULE 8 Data quality objectives

PART 1 Group A pollutants and PM_2·5

Group A pollutants (other than benzene and carbon monoxide) and PM_2·5

4.  The requirements for minimum data capture and time coverage do not include losses of data due to the regular calibration or the normal maintenance of the instrumentation.