( 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 45 ppb on March 28.
NO2 air pollution was HIGH for 0 hours on 0 days, reaching a maximum hourly mean of 67 ppb on March 23.
PM10 air pollution was HIGH for 0 hours on 0 days, reaching a maximum 24-hour mean of 69 µg/m³ on March 23.
-------------------------------------------------------------------------------------------------------------------- | | | | | | | | | | | | | | | 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) | 0 | 0 | - | - | 47 | | | | | | | | | N(LOW) | 708 | 716 | - | - | 659 | | | | | | | | | | | | | | | | | | | | | | | N(HOUR) > AQS | N/A | 0 | - | - | N/A | | | | | | | | | N(8HOUR) > AQS | 0 | N/A | - | - | N/A | | | | | | | | | N(DAILY) > AQS | N/A | N/A | - | - | 3 | | | | | | | | | Ann Mean > AQS | N/A | 0 | - | - | 0 | | | | | | | | | | | | | | | | | | | | | | | MAX 15-min | 46 ppb | 120 ppb | - ppm | - ppb | 267 µg/m³ | | | | | | | | | 99.9%ile 15-min | 46 ppb | 80 ppb | - ppm | - ppb | 198 µg/m³ | | | | | | | | | MAX hour | 45 ppb | 67 ppb | - ppm | - ppb | 188 µg/m³ | | | | | | | | | MAX 8-hour | 44 ppb | 49 ppb | - ppm | - ppb | 112 µg/m³ | | | | | | | | | MAX 24-hour | 39 ppb | 44 ppb | - ppm | - ppb | 69 µg/m³ | | | | | | | | | 99% dly max 24hr | 39 ppb | 44 ppb | - ppm | - ppb | 69 µg/m³ | | | | | | | | | MAX day | 38 ppb | 40 ppb | - ppm | - ppb | 60 µg/m³ | | | | | | | | | 90%ile day | 33 ppb | 21 ppb | - ppm | - ppb | 34 µg/m³ | | | | | | | | | AVERAGE | 23 ppb | 14 ppb | - ppm | - ppb | 24 µg/m³ | | | | | | | | | DATA CAPTURE | 96 % | 96 % | - % | - % | 96 % | | | | | | | | ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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%.
