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CSV data files for Marchlyn Mawr monitoring site

Listed below are links to CSV data files for Marchlyn Mawr. These files contain one year's automatic monitoring data and are updated daily. There are two formats to the files, firstly a file containing all pollutants measured at the site for each year followed by pollutant specific data files grouped by monitoring network.

To get the very latest data for Marchlyn Mawr use the Data Selector.

All Hourly Pollutant Data for site Marchlyn Mawr (Column Format)
2017 2016 2015 2014 2013 2012 2011 2010
2009 2008 2007 2006 2005 2004 2003 2002
2001 2000 1999          


Hourly Pollutant Files for Site Marchlyn Mawr in Welsh Automatic Rural pollution Monitoring (in 24x365 Table Format)
Nitric OxideNitrogen dioxideNitrogen oxides as nitrogen dioxideOzone
2017 2017 2017 2017
2016 2016 2016 2016
2015 2015 2015 2015
2014 2014 2014 2014
2013 2013 2013 2013
2012 2012 2012 2012
2011 2011 2011 2011
2010 2010 2010 2010
2009 2009 2009 2009
2008 2008 2008 2008
2007 2007 2007 2007
2006 2006 2006 2006
2005 2005 2005 2005
2004 2004 2004 2004
2003 2003 2003 2003
2002 2002 2002 2002
2001 2001 2001 2001
2000 2000 2000 2000
1999 1999 1999 1999