Messenger magentometer and coordinates dataset for Machine learning

This dataset is based on the original MESSENGER mission magnetometer and coordinate data as made available at PDS PPI. It introduces a number of improvements upon the original [1 sec temporal resolution]:

1. Magnetometer calibration signals have been removed.
2. Coordinates and magnetic field measurements have been merged together.
3. Additional fields, such as model dipole magnetic field and planetary position in a heliocentric coordinate system have been added.
4. The dataset has been split up into files by orbit numbers, with each file centered on the periapsis.
5. Data for a number of partially recorded orbits has been removed.