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Cyffordd Lon Campell, Caernarfon (C3) Cyffordd Lon Campell, Caernarfon (C3)

This section of the website allows you to choose a type of monitoring site, and then details for individual sites. Once you have chosen a site, its location will appear on the map above.

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Hydocarbon Diffusion Tube sitesHydocarbon Diffusion Tube sites (8 Sites)
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Non-Automatic Monitoring Sites in Wales

Cyffordd Lon Campell, Caernarfon (C3)

NO2 Diffusion Tube sites
Cyffordd Lon Campell, Caernarfon (C3) in 2015

«« 2011 2012 2013 2014 2015 »»

Nitrogen dioxide

Date NO2 Units
04/02/2015  14 ugm-3
04/03/2015  16 ugm-3
01/04/2015  16 ugm-3
29/04/2015  14 ugm-3
27/05/2015  10 ugm-3
01/07/2015  11 ugm-3
29/07/2015  9 ugm-3
26/08/2015  10 ugm-3
30/09/2015  15 ugm-3
28/10/2015  16 ugm-3
02/12/2015  9 ugm-3

Ratification Status:
» Red* - Provisional
» Green - Ratified

Use the buttons above to view data for years between 2000 and 2015

Further data and graphs may be downloaded here.

For more information on this monitoring data please contact this local authority at