  We perform a numerical study of the unitary regime as a function of disorder
concentration in the imaginary part of the elastic scattering cross-section for
the compound $Sr_2RuO_4$ in the flat band non-disperse limit. By using a
self-consistent tight-binding (TB) method, we find a couple of families of
Wigner probabilistic functions that help to explain macroscopically the
distribution between Fermion dressed quasiparticles and Cooper pairs, and also
the position of nodes in the order parameter for $Sr_2RuO_4$. Therefore, we are
able to show that a TB model for the $\gamma$ sheet numerically shows 4 point
nodes in a flat $\gamma$ sheet limit or 4 quasi-point nodes for strong
dispersion $\gamma$ sheet limit in the reduced phase scattering space (RPS).
