Series length required for levels of uncertainty

This map shows our best estimates of how long a series would be required at a site to produce an trend with an uncertainty of 1.0, 0.5 or 0.1 mm per year. These results were generated as part of our trend fitting procedure

Select desired level of uncertainty:

1.0 mm/yr 0.5 mm/yr 0.1 mm/yr


Under 30 Years	Under 40 Years	Under 50 Years	Under 75 Years	Under 100 Years	Under 200 Years	Over 200 Years
Length of series required for wanted uncertainty, years

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Series length required for levels of uncertainty