View source for Climatological standard normals



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== climatological standard normals ==
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<div class="definition"><div class="short_definition">Averages of [[climatological data]] calculated for the following consecutive  30-yr periods, established by international agreement: 1 January 1901 to 31 December  1930; 1 January 1931 to 31 December 1960; 1 January 1961 to 31 December 1990; 1 January  1991 to 31 December 2020; etc.</div><br/> <div class="paragraph"><br/>''See'' [[normal]].</div><br/> </div>
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