This describes the contents of the F4 planning documentation
files, available in a set of emails in 
  http://www.space.irfu.se/freja/plan/f4plans
or as one big single file 
  http://www.space.irfu.se/freja/plan/all_plans

Please observe that all information in the file is the planned operations,
not what actually happened. Orbits may have been cancelled and operational
modes changed for technical reasons at the ground stations or use of orbits
for engineering purposes. Also, the planner (usually me) is not perfect, 
and simple mistakes may occur. In particular, the auxilliary information
in columns 5 and 6 may be inaccurate. Anyway, the file gives a good
overview of the F4 operations, and may be useful.

Best wishes,

Anders Eriksson
IRF Uppsala (aie@irfu.se)

===============================================================

Column 1: Orbit number

Column 2: Date (yymmdd)

Column 3: Planned start time of station coverage (UT)

Column 4: Planned ground station coverage
  Esr, E = Esrange
  PA     = Prince Albert
  Syo, S = Syowa

Column 5: Approximate maximum magnetic latitude during time in contact
  with Esrange or Prince Albert. Use this as an indication only, not as
  the full truth!

Column 6: Approximate magnetic local time when at the magnetic latitude
  given in column 3.

Column 7: Topic. This is the topics assigned by the scientist in charge
  during part of 1993. This information is probably quite uninteresting,
  as most instruments did not adapt any special procedures on these
  orbits. For spring 1994, it shows when F3C have planned to run a
  special mode with moments only (no distribution functions).
  Likewise, F3H ran a similar mode during the spring 1995, which
  is also denoted here.
    0 = no topic assigned
    Wake = Wake studies
    IA = Ion acceleration
    LHW = Lower hybrid waves
    FAC = Field aligned currents
    CIH = Cold ion heating
    SW = Solitary wave structures
    F3H = F3H runs in special mode (spring 1995)
    F3C = F3C runs in special mode (spring 1994)

Column 8: Survey mode.
  0 = no survey
  Coarse = full orbit survey 
  Dump = dump of previous survey only
  Medium = ten minute survey 
  Fine = F4 runs in the same mode as medium

Column 9: Burst
  0 = no burst
  Burst = burst
  Trig = burst where F4 pulled the trigger

Column 10: F4 mode. F4 operational mode assigned to the orbit. The modes
  are described in separate tables; available at
  http://www.space.irfu.se/freja/plan/