| These data are generated as part of the International Magnetospheric Study. The file
consists of 10-second instantaneous measurements for the geomagnetic components D,
H, X, Y, Z and R. The 10 second values were collected digitally in real time by a
network of 26 ground observatories and relayed to the Space Environment Center, Boulder,
Colorado, via the SMS-GOES satellite and the Wallops Island, Virginia ground station.
The 1-minute average values are computed at the Space Environment Center in Boulder,
Colorado. The entry ID number for the 1-minute values is Dataset_ID G00124. These
data were generated as part of the International Magnetospheric Study. The file is
comprised of values of the geomagnetic components D, H, X, Y, Z and R from instantaneous
measurements taken at 10-second intervals at ground observatories. The 10-second values
are collected digitally in real time at the magnetic observatories and relayed to
the Space Environment Center via the SMS-GOES satellite to up to 26 geomagnetic observatories
that provide data. The data are not continuous in time for all observatories and not
necessarily continuous in time sequence for all elements at any one observatory. The
sources for the data are the following chains of geomagnetic observatories: Alaska
Chain, Churchill Chain, East-West Chain and Mid-Latitude Chain. |