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The combination of wavebands from 305 Hz to 3000 Hz.
The spectra are summarized consistent with the methodology of the
original researchers, as follows. The waveforms of the three axes were
used to independently compute magnetic field intensity at 5 Hz
intervals using standard Fast Fourier Transform techniques. The
resultant magnetic field intensity for each 5 Hz waveband was computed
as the square root of the sum of the squares of the corresponding
waveband of the three axes. The magnitude of each waveband component
is divided by the square root of two in order to convert to a
root-mean-square (rather than a peak-to-peak) value.
The spectral summaries are computed as the square root of the sum of
the squares of the magnitude of corrected waveband components.
The spectral summaries are computed as the square root of
the squares of the magnitude of the root-mean-square
Approximately 3%, but no better than about 0.1 milligauss.
A positive real number, in units of milligauss.