London Borough of Barnet Monitoring Data
Barnet Tally Ho (BN1)
Date Started: 20/12/1998
Environment: Urban Traffic
Site on land between two carriage ways of busy high street.
This monitoring site data was last updated: 21/09/2021 11:00
|PM10 particulate matter (Hourly measured)||Low (Index 2)||21 µg/m3 (VCM)||24 Hour mean|
|Nitrogen dioxide (NO2)||Low (Index 1)||26 µg/m3||hourly mean|
|Nitric oxide (NO)||not applicable||29 µg/m3||hourly mean|
|Nitrogen oxides as nitrogen dioxide (NOx as NO2)||not applicable||70 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.