TY JOUR TI Some peculiarities in longitude distribution of sunspot groups over last four eleven-year solar cycles KW sunspot cycle KW active longitudes KW classification values after Malde KW coordinate sector KW postdictors of active regions JO Solnechno-Zemnaya Fizika AU Rybak, A.L. PY 2016 IS 2 PB Institute of Solar-Terrestrial Physics SB RAS