| Sampling type | Data type | Completion requirement of data | Parameters |
| Automatic | Hourly data | Must have at least 75% of minute records (45 minutes or more) | PM10, PM2.5, O3, CO, SO2, NO, NOx, NO2, TMP, HR, WS and WD |
| 8-hour average | Must have at least 75% or more of hourly records (6 - 8 hours data) | O3 and CO | |
| Daily Maximum | For hourly data must have at least 75% or more hourly data (18 hour or more) | O3, CO, NO, NOx, NO2, TMP, HR and WS | |
| Daily Maximum | For 8-hour average data must have at least 75% or more records (18 hours or more) | O3 and CO | |
| Daily average | Must have at least 75% or more hourly records (18 hours or more) | PM10, PM2.5, SO2, TMP, HR and WS | |
| Manual | 24-hour sampling | Is valid for a sampling time between 23 - 25 hours (NOM-035-ECOL-1993) | PST, PM10, PM2.5, and Pb |