http://newsvote.bbc.co.uk/2/hi/scien...re/7786060.stm

Just looking at the figures on the above link.....

Can anybody explain how and why two significant decimal places are
considered? As far as I recollect an ordinary mercury thermometer is
accurate to 0.2 deg. So to suggest global mean temperatures are 14.31
degs seems totally meaningless. I would have though just 14 degs is
enough without trying to invent a greater accuracy.