1. Space Research Centre, Polish Academy of Sciences, Solar Physics Division, ul. Bartycka 18A, 00-716Warszawa, Poland
2. Space Research Centre, Polish Academy of Sciences, Solar Physics Division, ul. Bartycka 18A, 00-716Warszawa, Poland; Astronomical Institute, University of Wrocław, ul. Kopernika 11, 51-622Wrocław, Poland
3. Astronomical Institute, University of Wrocław, ul. Kopernika 11, 51-622Wrocław, Poland