Data Description
=================

ESA				The ESA (Electrostatic Analyzer) measures electrons and ions over the energy range 
				from ~3 eV to 30 keV. The ESA measures the full 3-D distributions, as well as the
				density, velocity, and temperature of the ambient electrons and ions.

	Peif_Plasma		High angular resolution and low (~6 min) time resolution ion particle data
		NP		Ion number density
		T_AVE		Ion average temperature
		VX_GSM		Ion velocity vector in X GSM coordinate
		VY_GSM 		Ion velocity vector in Y GSM coordinate
		VZ_GSM 		Ion velocity vector in Z GSM coordinate

	Peif_eflux		High angular resolution and low (~6 min) time resolution ion energy flux data
		EFLUX		Ion energy flux spectrogram
		EFLUX_LEVEL	32 spectrum energy channels (~3 eV to 30 keV)

	Peef_Plasma		High angular resolution and low (~6 min) time resolution electron particle data
		NP		Electron number density
		T_AVE		Electron average temperature
		VX_GSM		Electron velocity vector in X GSM coordinate
		VY_GSM 		Electron velocity vector in Y GSM coordinate
		VZ_GSM 		Electron velocity vector in Z GSM coordinate

	Peef_eflux		High angular resolution and low (~6 min) time resolution electron energy flux data
		EFLUX		Electron energy flux spectrogram
		EFLUX_LEVEL	32 spectrum energy channels (~3 eV to 30 keV)

	Peir_Plasma		Degraded angular resolution and high (~ 3 sec) time resolution ion particle data
		NP		Ion number density
		T_AVE		Ion average temperature
		VX_GSM		Ion velocity vector in X GSM coordinate
		VY_GSM 		Ion velocity vector in Y GSM coordinate
		VZ_GSM 		Ion velocity vector in Z GSM coordinate

	Peir_eflux		Degraded angular resolution and high (~ 3 sec) time resolution ion energy flux data
		EFLUX		Ion energy flux spectrogram
		EFLUX_LEVEL	32 spectrum energy channels (~3 eV to 30 keV)

	Peer_Plasma		Degraded angular resolution and high (~ 3 sec) time resolution electron particle data
		NP		Electron number density
		T_AVE		Electron average temperature
		VX_GSM		Electron velocity vector in X GSM coordinate
		VY_GSM 		Electron velocity vector in Y GSM coordinate
		VZ_GSM 		Electron velocity vector in Z GSM coordinate

	Peer_eflux		Degraded angular resolution and high (~ 3 sec) time resolution electron energy flux data
		EFLUX		Electron energy flux spectrogram
		EFLUX_LEVEL	32 spectrum energy channels (~3 eV to 30 keV)

FGM				The THEMIS Flux Gate Magnetometer (FGM) measures the background magnetic field and
				any low frequency (to 64 Hz) fluctuations superimposed upon it. The FGM can detect
				variations in the magnetic field within the accuracy of 0.01 nT.

	Fgs			Spin-resolution magnetic field B (~3 sec.)
		BT_GSM		The magnitude of FGS magnetic field B
		BX_GSM		FGS magnetic field B in X GSM Coordinate
		BY_GSM		FGS magnetic field B in Y GSM Coordinate
		BZ_GSM		FGS magnetic field B in Z GSM Coordinate

	Fgl			Low Telemetry magnetic field B (~0.3 sec.)
		BT_GSM		The magnitude of FGL magnetic field B
		BX_GSM		FGL magnetic field B in X GSM Coordinate
		BY_GSM		FGL magnetic field B in Y GSM Coordinate
		BZ_GSM		FGL magnetic field B in Z GSM Coordinate

	Fgh			High Telemetry magnetic field B (~0.007 sec.)
		BT_GSM		The magnitude of FGL magnetic field B
		BX_GSM		FGH magnetic field B in X GSM Coordinate
		BY_GSM		FGH magnetic field B in Y GSM Coordinate
		BZ_GSM		FGH magnetic field B in Z GSM Coordinate

STATE				Position and velocity data of 5 probes. 

	Pos			Position data of 5 probes.
		X_GSM		Position in X GSM Coordinate
		Y_GSM		Position in Y GSM Coordinate
		Z_GSM		Position in Z GSM Coordinate

	Vel			Velocity data of 5 probes.
		VX_GSM		Velocity in X GSM Coordinate
		VY_GSM		Velocity in Y GSM Coordinate
		VZ_GSM		Velocity in Z GSM Coordinate

SST				The THEMIS Solid State Telescope (SST) measures superthermal particle distribution
				functions, namely the number of ions and electrons coming towards the spacecraft from
				specified directions with specified energies within the energy range from 25 keV to 6 MeV.

	Psif_eflux		High angular resolution and low (~3 min) time resolution ion energy flux data
		EFLUX		Ion energy flux spectrogram
		EFLUX_LEVEL	16 spectrum energy channels (~25 keV to 6 MeV)

	Psef_eflux		High angular resolution and low (~3 min) time resolution electron energy flux data
		EFLUX		Electron energy flux spectrogram
		EFLUX_LEVEL	16 spectrum energy channels (~25 keV to 6 MeV)