A question about polarizati

I am looking for the *proper* definitions of the radiation pattern parameters
in the output of NEC (see bellow). What I know is:

  1] (THETA,PHI) are the *standard* spherical coordinates.
  2] E(THETA)/E(PHI) are the complex electric field at the point
      (R,THETA,PHI) in the transverse direction theta/phi.

What I am looking for is an *explicit* definition of the remaining six (6)
parameters in terms of THETA, PHI, E(THETA), and E(PHI). A reference to a
book or NEC documentation will be also appreciated.

Mainly, I am confused by the expressions POWER_GAINS(VERT.) & E(THETA), and
POWER_GAINS(HOR.) & E(PHI), isn't vertical<==>theta and horizontal<==>phi, and
how we compute POWER_GAINS(TOTAL) for a non linearly polarized antenna?
 
Another question: What is the most common plot for radiation pattern, i.e. for
non linearly polarized antenna do we plot E(THETA)&E(PHI),
POWER_GAINS(VERT.)&POWER_GAINS(HOR.), total E(?), or POWER_GAINS(TOTAL) in dB.

Thanks

For reference here is NEC output for radiation patterns
====================================================
 - - ANGLES - - - POWER GAINS -
 THETA PHI VERT. HOR. TOTAL
DEGREES DEGREES DB DB DB

...

    - - - POLARIZATION - - -
     AXIAL TILT SENSE
     RATIO DEG.

...

        - - - E(THETA) - - - - - - E(PHI) - - -
        MAGNITUDE PHASE MAGNITUDE PHASE
         VOLTS/M DEGREES VOLTS/M DEGREES

===================================================
Received on Thu Nov 30 1995 - 08:18:00 EST