2.4. Details of the Intervention
Monitoring devices: AirSpeck monitors employ a light-scattering nephelometer for recording real-time PM2.5 concentration data at 10 s intervals [National research partners in Spain and Czechia were trained by the Irish research team in the use of AirSpeck and RESpeck monitors. The study was carried out sequentially at the three centres, one in each country, over a one-year period, allowing for the same calibrated sensors to be used at each centre.