One of C3's old Central England Temperature (CET) charts shows up now and then on Twitter ('X') despite being quite dated. The most recent example was this tweet by @EcoSenseNow using a chart from an article we posted way back on January 13, 2010.
The fact that this chart is still being used, we thought it was time to update the chart with the new data since 2009. And we included with the updated chart the yellow box of text that was often added to 'C3' charts from 2009-2012. (The original chart included a yellow box of text.)
Additional historical, global and regional charts.