( Note: These data have been fully ratified by AEA Technology, NETCEN. )
NO2 air pollution was HIGH for 0 hours on 0 days, reaching a maximum hourly mean of 104 ppb on April 7.
SO2 air pollution was HIGH for 0 hours on 0 days, reaching a maximum 15-minute mean of 35 ppb on April 27.
CO air pollution was HIGH for 0 hours on 0 days, reaching a maximum 8-hour mean of 1.5 ppm on April 8.
-------------------------------------------------------------------------------------------------------------------- | | | | | | | | | | | | | | | 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 | 0 | - | | | | | | | | | N(LOW) | - | 716 | 720 | 2809 | - | | | | | | | | | | | | | | | | | | | | | | | N(HOUR) > AQS | - | 0 | N/A | 0 | - | | | | | | | | | N(8HOUR) > AQS | - | N/A | 0 | N/A | - | | | | | | | | | N(DAILY) > AQS | - | N/A | N/A | 0 | - | | | | | | | | | Ann Mean > AQS | - | 1 | N/A | 0 | - | | | | | | | | | | | | | | | | | | | | | | | MAX 15-min | - ppb | 122 ppb | 4.1 ppm | 35 ppb | - µg/m³ | | | | | | | | | 99.9%ile 15-min | - ppb | 109 ppb | 2.4 ppm | 30 ppb | - µg/m³ | | | | | | | | | MAX hour | - ppb | 104 ppb | 2.1 ppm | 24 ppb | - µg/m³ | | | | | | | | | MAX 8-hour | - ppb | 91 ppb | 1.5 ppm | 10 ppb | - µg/m³ | | | | | | | | | MAX 24-hour | - ppb | 77 ppb | 0.9 ppm | 6 ppb | - µg/m³ | | | | | | | | | 99% dly max 24hr | - ppb | 77 ppb | 0.9 ppm | 6 ppb | - µg/m³ | | | | | | | | | MAX day | - ppb | 73 ppb | 0.6 ppm | 5 ppb | - µg/m³ | | | | | | | | | 90%ile day | - ppb | 52 ppb | 0.4 ppm | 4 ppb | - µg/m³ | | | | | | | | | AVERAGE | - ppb | 39 ppb | 0.2 ppm | 2 ppb | - µg/m³ | | | | | | | | | DATA CAPTURE | - % | 99 % | 100 % | 100 % | - % | | | | | | | | ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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%.
