The diagram for London shows the times per 30 days, in the course of which the wind reaches a specific velocity. An interesting case in point would be the Tibetan Plateau, in which the monsoon creates continual sturdy winds from December to April, and relaxed winds from June to Oct. https://angeloarhyo.qodsblog.com/28197635/the-single-best-strategy-to-use-for-right-of-light-surveyors-london