GWT Clasification

Months

NEc

Octuber to December

Nc

April & July

Na

April & May

NEa

April & June

Ec

July to September

Ea

January, February & August

SEc

March, July & September

NWc

Octuber to December

Sc

August to Octuber

NWa

January & February

SEa

February & September

Wc

August, September & December

SWc

March, August & September

Sa

May & July

Wa

February & July

SWa

May, July & Octuber