Number of storms per year. Winds from SO-NO (225 to 315 degrees)
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column 1: year
column 2: # cat. 0 storms (HM0 => 1.5 m)
column 3: # cat. 1 storms (HM0 => 1.8 m)
column 4: # cat. 2 storms (HM0 => 2.0 m)
column 5: # cat. 3 storms (HM0 => 2.2 m)
column 6: # cat. 4 storms (HM0 => 2.5 m)
column 7: # cat. 5 storms (HM0 => 3.1 m)
column 8: winter nao index value

This data has been produced from HM0 values from HIPOCAS database 

Sotillo MG, Aznar R and Valero F. 2008 (november): The 44-year Mediterranean HIPOCAS wind database: A useful tool to analyse offshore extreme wind events from a long-term regional perspective. Coastal Engineering, Volume 55, Issue 11, Pages 930-943