This dataset contains the underlying data that are used in the figures of the article 'Improved analysis of solar signals for differential reflectivity monitoring' published in Atmospheric Measurement Techniques. The Finnish Meteorological Institute (FMI) operates a network of 10 C-band Doppler weather radars, of which nine radars are polarimetric. Every 15 min the radars perform a 30 12-elevation volume scan between 0.3 and 45◦ elevations, where 6 elevations up to 9◦ are scanned in single–PRF with 570 Hz, and then 6 elevations starting from 2 up to 45◦ in dual–PRF. Every 5 min the first 6 of these 12 elevations are repeated. The dataset contain analyses of so-called 'sunhits' that are detected in the polar volume data produced by the Finnish radars. Datasets are ascii text files where each line represents a datapoint, the content is described in separate 'Readme' files. The data files are best understood when they are read alongside the accompanying article by Huuskonen, Kurri, and Holleman entitled "Improved analysis of solar signals for differential reflectivity monitoring" in Atmos. Meas. Tech., 9, 3183-3192, 2016 (doi:10.5194/amt-9-3183-2016).