HadCRUT4 is a gridded dataset of global historical surface temperature anomalies relative to a 1961-1990 reference period.

 

HADCRUT4 Feb 1878 0.403C

HADCRUT4 Feb 2014 0.299C

 

http://www.cru.uea.ac.uk/cru/data/temperature/HadCRUT4-gl.dat

 

Global Warming?