Summary of monitored parameters of the PAMs
| Parameter | Method | Monitoring interval |
|---|---|---|
| Spatial coordinates | GPS | 20 s |
| Background noise | Microphone | 100 Hz |
| Physical activity | Triaxial accelerometer | 100 Hz |
| Temperature (°C) | Thermocouple | 20 s |
| RH (%) | Electrical resistive sensor | 20 s |
| PM1, PM2.5, PM10 (μg/m3) | OPC | 20 s |
| CO, NO, NO2, O3 (ppb) | Electrochemical sensors | 20 s |
CO, carbon monoxide; GPS, Global Positioning System; NO, nitric oxide; NO2, nitrogen dioxide; OPC, optical particle counter; O3, ozone; PAM, personal air monitor; PM, particulate matter; ppb, parts-per-billion; RH, relative humidity.