Particulate matter (PM2,5) Lübeck, St. Jürgen Tagesmittel 2023

In order to protect people’s health and vegetation from the influences of excessive air pollution, air quality is continuously examined and assessed according to legal regulations. For this purpose, the State Office for the Environment (LfU) in Schleswig-Holstein operates a network of measuring stations at which air pollutants are measured using different methods. The measurement data from Schleswig-Holstein and many additional information on the measurements are forwarded to the Federal Environment Agency and reported to the European Commission together with the data of all federal states. All currently published data must be classified as ***provisional***, as they are first checked for validity for your quick information. Before the final assessment and assessment of air quality, a multi-stage inspection according to legal requirements will take place later. In the CSV files, on the day of the change from normal time (CET) to daylight saving time (CEST) the 3 o‘clock measurement is missing, but on the day of the conversion from summer to normal time, there are two 3 o’clock measurements. The JSON files are not affected by this problem, here normal time is used throughout. [Information on the measuring station](https://www.schleswig-holstein.de/DE/Fachinhalte/L/luftqualitaet/Messstationen/LuebeckStJuergen.html)为保护民众健康与植被免受过度空气污染的危害，各国需依据法定监管要求持续开展空气质量监测与评估工作。 为此，石勒苏益格-荷尔斯泰因州环境局（State Office for the Environment, LfU）搭建了空气质量监测站网络，采用多种检测方法对空气污染物进行采样分析。 该州的监测数据，以及大量与测量相关的附加信息，将被报送至德国联邦环境署，并与全联邦各州的监测数据一同提交给欧洲委员会。 当前所有对外发布的数据均标记为**临时数据**，因相关数据需先完成有效性核验，仅用于快速信息参考。后续还将依照法定要求开展多阶段核查，最终完成空气质量的正式评估与认定。 在CSV文件中，从标准时间（CET）切换至夏令时间（CEST）的当日，3点整的监测数据会出现缺失；而在夏令时间切换回标准时间的当日，则会存在两条3点整的监测数据。JSON文件不受该异常情况影响，全程采用标准时间记录。 [监测站相关信息](https://www.schleswig-holstein.de/DE/Fachinhalte/L/luftqualitaet/Messstationen/LuebeckStJuergen.html)