Z=[0.0001 0.0042 -0.2450 -0.0298 -0.0000; 
    -0.0005 0.3265 -5.6803 -0.4405 0.0036; 
    -0.0365 -2.7736 0.9810 3.2695 0.0331; 
    -0.0031 0.4784 7.9966 1.1853 0.0044; 
    0.0000 0.031 0.2999 0.0320 0];