Data for figures and supplementary figures of the Guangdong air pollution manuscript

This record contains the processed data used to generate the main figures and supplementary figures for the associated manuscript on long-term air quality change in Guangdong Province, China. The upload includes plot-ready CSV files, a README, a manifest, and a data dictionary. These files are processed data prepared for figure reproduction and sharing, rather than raw original measurements.本数据集涵盖用于生成关联研究论文中关于中国广东省长期空气质量变化主题的主图与补充图的经处理数据。 本次上传内容包含可直接用于绘图的逗号分隔值（Comma-Separated Values，CSV）文件、自述文档（README）、文件清单（manifest）以及数据字典（data dictionary）。所提供的文件均为预处理后的数据，专为图表复现与共享而制备，并非原始实测观测数据。