AMPTE-CCE Medium Energy Particle Analyzer (MEPA), Energetic Particles, H0, 0.1875 s Data

The AMPTE data was divided into records, with each record holding data from 4 spins. In any record, all the TOF species channels are always present, but only one of either a, the 10 ION head channels or b, 9 TOF generic channels are present. The majority of records have the ION head channels.

The AMPTE spacecraft had a spin period of about 6 seconds. The exact spin period varies slightly and is included in the data. MEPA data is sectored into 32 directions per spin.

Nearly all channels are reported as sectored values, but to conserve telemetry, many channels are only read out every other spin, or every fourth spin. In this data, all values are summed so that they are reported every fourth spin. Note that in the original AMPTE datesets, there was a timing problem which required that 19.75 seconds, one Major Frame of telemetry, be added to time values extracted from the processing system.

This correction has already been made in the particle data in this dataset.