The above figuers show the variation in $`\beta`$ with respect to the rank of the covariance matrix for off-source samples. The plots are produced using the off-source samples obtained for maximum likelihood samples which are reported in the above tables. We can see that the $`\beta`$ values are nearly equal to zero when the rank is very low. But, its modulus value increases sharply when the rank of the matrix O(10).
