Octanethiol molecule conductance histogram. Conductance histogram built from 500 traces (dark red) and corrected histogram (light red) after subtracting the tunneling contribution. The corrected histogram shows two conductance peaks. The most probable conductance associated to these peaks is obtained from the fit of the corrected histogram to the sum of two Gaussian curves. The dashed purple and blue curves are the two Gaussians, and the dotted black curve is their sum. The positions of the maximum of the peaks mark the two most probable molecular configurations.