Solar-Geophysical Data Number 564, August 1991. Part 1 (Prompt Reports). Data forJuly, June 1991, and Late Data

摘要

;Contents: Detailed index for 1990-1991; Data for July 1991--Solar-terrestrialenvironment, IUWDS alert periods (advance and worldwide), Solar activity indices, Solar flares, Stanford mean solar magnetic field; Solar active regions, Sudden ionospheric disturbances, Solar radio spectral observations, Cosmic ray measurements by neutron monitor, Geomagnetic indices.