Dst Indices
The CEDAR Database contains hourly Dst values calculated from
lower latitude ground magnetometers between 1 January 1957 to
within about 6 months of the present. These can be obtained via the
CEDAR Database (click on 'Data Services', 'Get/plot data' and proceed
with 'Select an Instrument', 'Geophysical Indices from NGDC: Dst'
about 3rd page down after the IS radars).
Other sources for Dst (1957-present) are:
-Revised 10 Nov 2006 by emery@ucar.edu