This directory contains maps of magnetic field perturbations due to
currents in the magnetosphere and ionosphere.

The files are all ascii and named as:

delBmap.RUN.ALT.IST.CUR

where:

* RUN is the OpenGGCM run identifier.
* ALT is the altitude in km above Earth's surface.
* IST is the step (seconds since start of the run).
* CUR is thye current system that cause the perturbations:

**  cio:  currents in the ionosphere flowing in a 2d shell at 110 km altitude.
**  fac:  field aligned currents flowing between cio and 4.5 RE.
**  mag:  currents flowing outside of 4.5 RE.
**  sum:  sum of all currents.

Each file has comment lines, which start with a #.

The data are on a regular geographic lat/lon grid and in nT.
The comments at the start of each file have additional information.

Jimmy Raeder, 12/2017, J.Raeder@unh.edu