( Note: These data are provisional ; fully ratified results will be available later. )
Ozone air pollution was HIGH for 0 hours on 0 days, reaching a maximum hourly mean of 68 ppb on May 13.
NO2 air pollution was HIGH for 0 hours on 0 days, reaching a maximum hourly mean of 51 ppb on May 11.
PM10 air pollution was HIGH for 0 hours on 0 days, reaching a maximum 24-hour mean of 42 µg/m³ on May 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) | 28 | 0 | - | - | 0 | | | | | | | | | N(LOW) | 637 | 654 | - | - | 657 | | | | | | | | | | | | | | | | | | | | | | | N(HOUR) > AQS | N/A | 0 | - | - | N/A | | | | | | | | | N(8HOUR) > AQS | 8 | N/A | - | - | N/A | | | | | | | | | N(DAILY) > AQS | N/A | N/A | - | - | 1 | | | | | | | | | Ann Mean > AQS | N/A | 0 | - | - | 0 | | | | | | | | | | | | | | | | | | | | | | | MAX 15-min | 71 ppb | 57 ppb | - ppm | - ppb | 225 µg/m³ | | | | | | | | | 99.9%ile 15-min | 68 ppb | 50 ppb | - ppm | - ppb | 113 µg/m³ | | | | | | | | | MAX hour | 68 ppb | 51 ppb | - ppm | - ppb | 106 µg/m³ | | | | | | | | | MAX 8-hour | 55 ppb | 33 ppb | - ppm | - ppb | 57 µg/m³ | | | | | | | | | MAX 24-hour | 37 ppb | 23 ppb | - ppm | - ppb | 42 µg/m³ | | | | | | | | | 99% dly max 24hr | 37 ppb | 23 ppb | - ppm | - ppb | 42 µg/m³ | | | | | | | | | MAX day | 34 ppb | 20 ppb | - ppm | - ppb | 42 µg/m³ | | | | | | | | | 90%ile day | 32 ppb | 14 ppb | - ppm | - ppb | 23 µg/m³ | | | | | | | | | AVERAGE | 26 ppb | 9 ppb | - ppm | - ppb | 18 µg/m³ | | | | | | | | | DATA CAPTURE | 89 % | 88 % | - % | - % | 89 % | | | | | | | | ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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%.
