The properties of mercury in a glass tube are subject to periodic change and adjustment by Michael Mann and Phil Jones.The blue line is the actual temperature measurement recorded for Darwin, Australia. The black line is adjustments made to the blue line to create the red line. The red line is the official "homogenized and adjusted" temperature record used by the IGCC to "demonstrate" that the earth is warming.
Don't believe your lying eyes, trust the CRU at East Anglia U.
Asking these "experts" for the temperature is like asking an ACLU attorney what the plain English of the Constitution means. They each create their own alternative reality.
HT - Willis Eschenbach via WUWT