I want to go on record and say that establishing an "Average" temperature to a tenth of a degree for planet Earth is total horseshit and is the first fraud perpetrated by the AGW Cult. Don't believe me? Whats the "temperature" for Mars? NASA lists it as 186-268K "The temperature on Mars may reach a high of about 70 degrees Fahrenheit (20 degrees Celsius) at noon, at the equator in the summer, or a low of about -225 degrees Fahrenheit (-153 degrees Celsius) at the poles. Obviously this is very inhospitable for humans, but it is also of some concern for the electronics and mechanical parts of a Mars airplane and its instrumentation. In the mid-latitudes, the average temperature would be about -50 degrees Celsius with a nighttime minimum of -60 degrees Celsius and a summer midday maximum of about 0 degrees Celsius." :: NASA Quest > Aerospace :: Note, they don't say the "average temperature" on Mars is x.x because it's a meaningless number. Same with Earth it's a complex, varied system and to say there's an "Average" temperature is just absurd.