  For energy eigenfunctions of 1-dimensional tight binding model, the
distribution of ratio of their nearest components, denoted by f(p), gives
information for their fluctuation properties. The shape of f(p) is studied
numerically for three versions of the 1D tight binding model. It is found that
when perturbation is strong the shape of f(p) is usually quite close to that of
the Lorentzian distribution. In the case of weak perturbation the shape of the
central part of f(p) is model-dependent while tails of f(p) are still close to
the Lorentzian form.
