Tammet, HannesHõrrak, UrmasSalm, Jaan2016-01-192016-01-192000http://hdl.handle.net/10062/50240enCC0 1.0 Universalhttp://creativecommons.org/publicdomain/zero/1.0/Statistical characterization of air ion mobility spectra at Tahkuse Observatory: Classification of air ionsDataset