( 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 88 ppb on July 5.
NO2 air pollution was HIGH for 0 hours on 0 days, reaching a maximum hourly mean of 41 ppb on July 28.
PM10 air pollution was HIGH for 4 hours on 1 days, reaching a maximum 24-hour mean of 87 µg/m³ on July 24.
-------------------------------------------------------------------------------------------------------------------- | | | | | | | | | | | | | | | 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 | - | - | 4 | | | | | | | | | N(MODERATE) | 72 | 0 | - | - | 20 | | | | | | | | | N(LOW) | 667 | 730 | - | - | 720 | | | | | | | | | | | | | | | | | | | | | | | N(HOUR) > AQS | N/A | 0 | - | - | N/A | | | | | | | | | N(8HOUR) > AQS | 39 | N/A | - | - | N/A | | | | | | | | | N(DAILY) > AQS | N/A | N/A | - | - | 3 | | | | | | | | | Ann Mean > AQS | N/A | 0 | - | - | 0 | | | | | | | | | | | | | | | | | | | | | | | MAX 15-min | 94 ppb | 93 ppb | - ppm | - ppb | 789 µg/m³ | | | | | | | | | 99.9%ile 15-min | 85 ppb | 44 ppb | - ppm | - ppb | 523 µg/m³ | | | | | | | | | MAX hour | 88 ppb | 41 ppb | - ppm | - ppb | 485 µg/m³ | | | | | | | | | MAX 8-hour | 70 ppb | 28 ppb | - ppm | - ppb | 161 µg/m³ | | | | | | | | | MAX 24-hour | 47 ppb | 20 ppb | - ppm | - ppb | 87 µg/m³ | | | | | | | | | 99% dly max 24hr | 47 ppb | 20 ppb | - ppm | - ppb | 87 µg/m³ | | | | | | | | | MAX day | 46 ppb | 20 ppb | - ppm | - ppb | 67 µg/m³ | | | | | | | | | 90%ile day | 40 ppb | 17 ppb | - ppm | - ppb | 38 µg/m³ | | | | | | | | | AVERAGE | 24 ppb | 10 ppb | - ppm | - ppb | 24 µg/m³ | | | | | | | | | DATA CAPTURE | 99 % | 98 % | - % | - % | 99 % | | | | | | | | ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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%.
