Figure A1.
A fundamental property of measured spark amplitudes. Histogram f(as) of scanned amplitudes, as, for 10,720 sparks simulated with 30 pA current and 5 ms release duration, placed at random y and z distances from the scanning line. Line plots best fit by the inverse function (Eq. 10). Similar deviations between f and fit were observed in simulations with other parameter values.
