Year | Mean CH4 (ppmv) | Solar radiation MJ/m2 (measured) | Solar radiation MJ/m2 (predicted) |
2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 | 1740.994 1738.120 1737.331 1730.918 1740.740 1743.628 1750.178 1746.312 1759.923 1773.787 | 22.973 22.723 21.970 23.072 22.791 23.062 22.251 23.548 23.921 24.012 | 23.076 22.975 22.948 22.723 23.069 23.168 23.397 23.262 23.738 24.224 |