Wigner Dyson distribution HELP!!!

Hi everyone, I'm construct an ensemble de 10 1000x1000 adjacent matrix whose has elements 0 and 1.this kind of matrix is symmetric. with its eigenvalues, the distance between them, after of produce one process called "Unfolding", generate one statistical distribution called narest neighbor spatial distribution and is a wigner-dyson distribution. the problem is that i can get the histogram but is non close to the W-D distribution. anyone could help me?

Thanks!