|Met Office Hadley Centre observations datasets|
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The red bars show the global annual average near surface temperature anomalies from 1850 on. The error bars show the 95% uncertainty range on the annual averages. The green bar shows the provisional average for the year so far. The thick blue line shows the annual values after smoothing with a 21 point binomial filter. The dashed portion of the smoothed line indicates where it is influenced by the treatment of the end points. The thin blue lines show the 95% uncertainty on the smoothed curve.
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