( 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 70 ppb on June 17.
NO2 air pollution was HIGH for 0 hours on 0 days, reaching a maximum hourly mean of 74 ppb on June 8.
PM10 air pollution was HIGH for 0 hours on 0 days, reaching a maximum 24-hour mean of 59 µg/m³ on June 9.
-------------------------------------------------------------------------------------------------------------------- | | | | | | | | | | | | | | | 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) | 70 | 0 | - | - | 36 | | | | | | | | | N(LOW) | 627 | 717 | - | - | 684 | | | | | | | | | | | | | | | | | | | | | | | N(HOUR) > AQS | N/A | 0 | - | - | N/A | | | | | | | | | N(8HOUR) > AQS | 44 | N/A | - | - | N/A | | | | | | | | | N(DAILY) > AQS | N/A | N/A | - | - | 4 | | | | | | | | | Ann Mean > AQS | N/A | 0 | - | - | 0 | | | | | | | | | | | | | | | | | | | | | | | MAX 15-min | 72 ppb | 157 ppb | - ppm | - ppb | 296 µg/m³ | | | | | | | | | 99.9%ile 15-min | 70 ppb | 79 ppb | - ppm | - ppb | 202 µg/m³ | | | | | | | | | MAX hour | 70 ppb | 74 ppb | - ppm | - ppb | 182 µg/m³ | | | | | | | | | MAX 8-hour | 66 ppb | 31 ppb | - ppm | - ppb | 116 µg/m³ | | | | | | | | | MAX 24-hour | 55 ppb | 24 ppb | - ppm | - ppb | 59 µg/m³ | | | | | | | | | 99% dly max 24hr | 55 ppb | 24 ppb | - ppm | - ppb | 59 µg/m³ | | | | | | | | | MAX day | 51 ppb | 22 ppb | - ppm | - ppb | 57 µg/m³ | | | | | | | | | 90%ile day | 36 ppb | 20 ppb | - ppm | - ppb | 39 µg/m³ | | | | | | | | | AVERAGE | 25 ppb | 11 ppb | - ppm | - ppb | 25 µg/m³ | | | | | | | | | DATA CAPTURE | 97 % | 100 % | - % | - % | 98 % | | | | | | | | ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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%.
