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The first plot shows the monthly anomalies; a plus sign in any grid box indicates that the temperature anomaly in that grid box this month is the highest since the dataset starts in January 1850. Similarly a minus sign signals the lowest anomaly since 1850.

The second figure highlights regions with values which are unusual compared with the 1961-90 averages. The plot shows the regions which exceed the highest (or lowest) 10% and 2% of values seen in the climatology period.

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