Geomagnetic data for 1991 through 1995 now available on CD‐ROMs

Abstract

CD‐ROMs containing data from a global network of geomagnetic observatories (Figure 1) are now available for 1991 through 1995 from the International Real‐time Magnetic Observatory Network (INTERMAGNET), a nonprofit association of world institutions that operate geomagnetic observatories. The data are 1‐min, hourly, and daily mean values of the vector components (X, Y, X or H, D, Z) and, for most stations, the total field, F. Resolution is 0.1 nanotesla or 0.1 min of arc for declination. Magnetic activity indices (K) are available for most stations, and baseline and absolute value plots are given for all observatories for the 1993, 1994, and 1995 CD‐ROMs.