nag_robust_m_regsn_wts (g02hbc) Example Program Results (User-supplied callback ucv, first invocation.) nag_robust_m_regsn_wts (g02hbc) required 16 iterations to converge Matrix A 1.3208 0.0000 1.4518 -0.5753 0.0000 0.9340 Vector Z 2.4760 1.9953 2.4760 1.9953 2.5890 Vector of weights 0.4039 0.5012 0.4039 0.5012 0.3862