Solar-geophysical data number 574, June 1992. Part 1: (Prompt reports). Data for May, April 1992 and late data

Detailed index for 1991-1992; Data for May 1992 -- Solar-terestrial environment, IUWDS alert periods (Advance and Worldwide), Solar activity indices, Solar flares, Solar radio emission, Stanford mean solar magnetic field; Data for April 1992 -- Solar active regions, Sudden ionospheric disturbances, Solar radio spectral observations, Cosmic ray measurements by neutron monitor, Geomagnetic indices; Late data -- Geomagnetic activity indices Mar. 92.