The annual average of fog days at the three stations are 24.7 d,30.4 d and 21.0 d,respectively.
三站的年平均雾日数分别为24.7d、30.4d和21.0d。
参考来源 - 雷州半岛雾的气候特征及生消机理·2,447,543篇论文数据，部分数据来源于NoteExpress
另外，呼和浩特市雷暴日数、雾日数增加了，而日照时数在减少。
The number of thunderstorm day and the fog day was increased but the sunshine duration was decreased.
利用上海11个气象站点近50年的雾日和霾日统计资料，从时间和空间两方面分析了上海雾、霾日数的气候特征和变化规律。
Based on the fog and haze data from 11 meteorological stations in Shanghai, the temporal and spatial climatic characteristics and change laws of fog and haze days in recent 50 years were analyzed.
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