The L1 STATE files contain the following data, sampled at one-minute intervals:
* probe position and velocity in GEI, GSE, and GSM coordinates;
* flags to indicate regions of interest and maneuver status;
* RA and declination of spin axis;
* spin period and spin phase;
* spin model parameters for high-precision interpolation of spin phase between one-minute data points.
Version number indicates data source as follows:
* V00: predicted ephemeris and attitude, no spin period or spin phase;
* V01: predicted ephemeris and attitude, spin period and spin phase derived from probe telemetry;
* V02: predicted attitude, definitive ephemeris from magnetometer and Doppler tracking data;
* V03: corrected attitude and spin phase derived from fully calibrated magnetometer data (added science attitude determination using perigee data post-processing).
Produced by Mission Ops, Science Ops and Science Team.