( Note: These data have been fully ratified by AEA Technology, NETCEN. )
Ozone air pollution was HIGH for 0 hours on 0 days, reaching a maximum hourly mean of 64 ppb on July 21.
NO2 air pollution was HIGH for 0 hours on 0 days, reaching a maximum hourly mean of 45 ppb on July 17.
PM10 air pollution was HIGH for 0 hours on 0 days, reaching a maximum 24-hour mean of 54 µg/m³ on July 26.
-------------------------------------------------------------------------------------------------------------------- | | | | | | | | | | | | | | | POLLUTANT | O3 | NO2 | CO | SO2 | PM10 | | | | | | | | | | | | | | | | | This | This | This | This | This | | | | | | | | | | Period | Period | Period | Period | Period | | | | | | | | | | | | | | | | N(V. HIGH) | 0 | 0 | - | - | 0 | | | | | | | | | N(HIGH) | 0 | 0 | - | - | 0 | | | | | | | | | N(MODERATE) | 26 | 0 | - | - | 28 | | | | | | | | | N(LOW) | 710 | 738 | - | - | 688 | | | | | | | | | | | | | | | | | | | | | | | N(HOUR) > AQS | N/A | 0 | - | - | N/A | | | | | | | | | N(8HOUR) > AQS | 10 | N/A | - | - | N/A | | | | | | | | | N(DAILY) > AQS | N/A | N/A | - | - | 3 | | | | | | | | | Ann Mean > AQS | N/A | 0 | - | - | 0 | | | | | | | | | | | | | | | | | | | | | | | MAX 15-min | 65 ppb | 60 ppb | - ppm | - ppb | 655 µg/m³ | | | | | | | | | 99.9%ile 15-min | 64 ppb | 54 ppb | - ppm | - ppb | 181 µg/m³ | | | | | | | | | MAX hour | 64 ppb | 45 ppb | - ppm | - ppb | 306 µg/m³ | | | | | | | | | MAX 8-hour | 58 ppb | 38 ppb | - ppm | - ppb | 89 µg/m³ | | | | | | | | | MAX 24-hour | 36 ppb | 25 ppb | - ppm | - ppb | 54 µg/m³ | | | | | | | | | 99% dly max 24hr | 36 ppb | 25 ppb | - ppm | - ppb | 54 µg/m³ | | | | | | | | | MAX day | 33 ppb | 23 ppb | - ppm | - ppb | 53 µg/m³ | | | | | | | | | 90%ile day | 28 ppb | 17 ppb | - ppm | - ppb | 32 µg/m³ | | | | | | | | | AVERAGE | 23 ppb | 11 ppb | - ppm | - ppb | 20 µg/m³ | | | | | | | | | DATA CAPTURE | 97 % | 99 % | - % | - % | 95 % | | | | | | | | ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Note : Exceedences of PM10 Air Quality Standards (AQS) are based on gravimetric equivalent data.
All other PM10 statistics are based on TEOM data and may therefore under-read gravimetric results by 30%.
