Voyager ASCII summary data format s/c id (FLT1 = Voyager 1, FLT2 = Voyager 2) coordinate system (PL = payload, HG = heliographic, S3 = Jupiter planetary system, L1 = Saturn planetary system, U1 = Uranus planetary system, N1 = Neptune planetary system) integer year decimal day (January 1 = 1) MAG field magnitude MAG field modulus MAG field delta (latitudinal) angle ASIN(B(3)/FMOD) * 57.2957795D0 MAG field lambda (longitudinal) angle 180 - ATAN2(B(2),-B(1)) * 57.2957795D0 MAG field radial component (nT) if HG or planetary coordinate system x component (nT) PL if coordinate system MAG field tangential component (nT) if HG coordinate system latitudinal component if planetary coordinate system y component (nT) PL if coordinate system MAG field normal component (nT) if HG coordinate system longitudinal component if planetary coordinate system z component (nT) if PL coordinate system MAG field radial component RMS MAG field tangential component RMS MAG field normal component RMS s/c position x component s/c position y component s/c position z component s/c position vector