Semi-quantitative monthly mean surface ozone observations from station Guarda

The dataset consists of a set of semi-quantitative surface ozone observations (hereinafter O3), together with relative humidity observations at the same temporal scales. The...本数据集包含一组半定量地表臭氧（surface ozone，下称O3）观测数据，以及同时间尺度下的相对湿度（relative humidity）观测数据。