London Borough of Barnet Monitoring Data
Barnet Chalgrove School (BN2)
Date Started: 09/08/2000
Environment: Urban Background
Site within school playground within suburban area, 300m from busy A406
This monitoring site data was last updated: 21/09/2021 11:00
|PM10 particulate matter (Hourly measured)||Low (Index 2)||22 µg/m3 (VCM)||24 Hour mean|
|Nitrogen dioxide (NO2)||Low (Index 1)||11 µg/m3||hourly mean|
|Nitric oxide (NO)||not applicable||4 µg/m3||hourly mean|
|Nitrogen oxides as nitrogen dioxide (NOx as NO2)||not applicable||17 µg/m3||hourly mean|
Note: Values are based on provisional data. Data are GMT hour ending.
PM10 is measured as a running 24 hour mean, up to the current hour, and the band/index is calculated accordingly.