This data set includes 1-minute averages
    of the electric and magnetic wave spectra obtained during the period that
    the Galileo plasma wave receiver was operated during the flyby of Ida.
    The parameter provided for the electric field spectrum is the electric
    field spectral density in units of V^2/m^2/Hz. The magnetic field spectrum
    is provided in units of magnetic field spectral density, nT^2/Hz.  The
    spectral information is averaged and binned into 49 logarithmically-spaced
    channels from about 6 Hz to 5.6 MHz for the electric measurements and
    34 channels from about 6 Hz to 75 kHz for the magnetic.  Note that these
    'channels' do not generally correspond to the 158 specific channels
    described in the instrument description document. The reduction in
    spectral resolution for this data set was performed in order to make the
    set more conducive to use as a browse data set.   The sources of this
    browse data set are the High Frequency Receiver, Sweep Frequency Receiver,
    and Spectrum Analyzer which make up the Low Rate Science portion of
    the PWS.

This data set includes all available Low Rate Science spectrum analyzer
    data within the interval of time covered. The data included in this set
    have been checked for accuracy by including only those words from the
    telemetry stream which did not have parity errors based on parity bits
    included with the data as part of the PWS data processing unit functions.
    The magnetic spectra contain narrowband interference lines at 2.4 kHz and
    harmonics.  Missing data are indicated by zero.