These datasets were extracted from the TOAR database (see https://join.fz-juelich.de) for educational purposes. They contain hourly timeseries of measured and assimilated temperature at 3 sites of the Northrhine-Westphalia air quality network run by LANUV (https://www.lanuv.nrw.de/umwelt/luft/immissionen/messorte-und-werte/). Measured data are from LANUV and were obtained from the German Umweltbundesamt. The re-analyzed data are from a reanalysis that was performed at the Meteorological Institute of the University in Bonn, Germany (MIUB) with the COSMO model of the German weather service DWD. The data are intended for use in the Python programming course at the MIUB.

Station ids: DENW010 = Unna Königsborn (suburban background) , DENW059 = Köln Rodenkirchen (suburban background) , DENW064 = Simmerath, Eifel (rural background); filenames ending on 'LANUV.csv' contain measured data, filenames ending on 'MIUB.csv' contain the reanalysis data. Measured timeseries are from 2010-01-01 through 2018-12-31, reanalysis timeseries are from 2010-01-01 through 2014-12-31.

Data format is CSV with semicolon as separator; Each file has 23 header lines, the last of which contains the column names; Columns are datetime (as YYYY-MM-DD hh:mm), value (i.e. temperature in degC, float, variable length), and flag (float value, always 0).