| The average westerly component is greater in the winter than in the summer. The latitude of the axis of greatest seasonal wind speed is further south in winter than in summer |
| The average westerly component is greater in the summer than in the winter. The latitude of the axis of greatest wind speed is also further north in summer than in winter |
| The average westerly component remains the same but the altitude of greatest wind speed reduces in winter |
| The average westerly component remains the same but the axis of greatest speeds moves south in winter |
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