Going beyond 1 M the variation of the peak starts to become weaker (e.g. when comparing 0.95 M and 1.4 M the peak height decreases by approx. 30% despite an increase of the salt content by nearly 50%). This implies that the binding strength of the cation-anion pairs is reduced. This is a natural consequence of the fact that the CNs approach and finally exceeds one. Thus, local charge neutrality is automatically fulfilled for larger salt concentration and thus no longer serves as a strong mechanisms for the cation-anion pair interaction. This is consistent with the continuous decrease of σ d +-/σ N E with salt concentration. The second NN peak displays a very similar behavior. Here it is even more evident that above approx. 1M the structure hardly changes, which implies that individual cation-anion pairs are no longer relevant.