Report - KNMI - Koninklijk Nederlands Meteorologisch Instituut · 3-4 Bft 1-2 Bft 2.4% stil/var mei, normaal 1981-2010 W O N Z 30% >=5 Bft 3-4 Bft 1-2 Bft 5.1% Figuur 4: Windroos In de windroos

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