importing root, please wait ...
...root imported
Using root file /twist/tw00y/systematics//data/set72/anal2/goodlinks/run42182/042182.root
using z positions from 2006/7
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 3 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 4 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 5 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== 5.56158e+08 added to diagonal of error matrix
 EIGENVALUES OF SECOND-DERIVATIVE MATRIX:
        -1.0547e+04  9.4772e-01  9.7996e-01  1.0160e+00  1.0690e+00  1.0810e+00  1.0549e+04
 MINUIT WARNING IN HESSE   
 ============== MATRIX FORCED POS-DEF BY ADDING 10557.510951 TO DIAGONAL.
 EIGENVALUES OF SECOND-DERIVATIVE MATRIX:
        -3.8988e-02  2.5501e-02  2.7728e-01  9.0038e-01  9.4368e-01  1.5985e+00  3.2936e+00
 MINUIT WARNING IN HESSE   
 ============== MATRIX FORCED POS-DEF BY ADDING 0.042282 TO DIAGONAL.
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 2 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 3 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 4 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 5 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== 1.13932e+08 added to diagonal of error matrix
 EIGENVALUES OF SECOND-DERIVATIVE MATRIX:
        -5.4828e+03  9.6274e-01  9.8855e-01  1.0018e+00  1.0093e+00  1.0381e+00  5.4848e+03
 MINUIT WARNING IN HESSE   
 ============== MATRIX FORCED POS-DEF BY ADDING 5488.265692 TO DIAGONAL.
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 2 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 3 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 4 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 5 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== 1.13934e+08 added to diagonal of error matrix
 EIGENVALUES OF SECOND-DERIVATIVE MATRIX:
        -5.4824e+03  9.6363e-01  9.8888e-01  1.0017e+00  1.0091e+00  1.0371e+00  5.4844e+03
 MINUIT WARNING IN HESSE   
 ============== MATRIX FORCED POS-DEF BY ADDING 5487.891758 TO DIAGONAL.
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 2 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 3 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 4 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 5 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== 1.13934e+08 added to diagonal of error matrix
 EIGENVALUES OF SECOND-DERIVATIVE MATRIX:
        -5.4823e+03  9.6363e-01  9.8889e-01  1.0017e+00  1.0091e+00  1.0371e+00  5.4843e+03
 MINUIT WARNING IN HESSE   
 ============== MATRIX FORCED POS-DEF BY ADDING 5487.827361 TO DIAGONAL.
 EIGENVALUES OF SECOND-DERIVATIVE MATRIX:
        -5.0546e-04  1.9850e-01  5.4591e-01  8.6852e-01  1.2259e+00  1.8138e+00  2.3479e+00
 MINUIT WARNING IN HESSE   
 ============== MATRIX FORCED POS-DEF BY ADDING 0.002853 TO DIAGONAL.
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 2 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== 1.0493e+07 added to diagonal of error matrix
 EIGENVALUES OF SECOND-DERIVATIVE MATRIX:
        -7.5264e+02 -1.9238e-02  8.2432e-01  9.1937e-01  1.0724e+00  2.2698e+00  7.5457e+02
 MINUIT WARNING IN HESSE   
 ============== MATRIX FORCED POS-DEF BY ADDING 753.392719 TO DIAGONAL.
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 2 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 3 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 4 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 5 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== 1.13932e+08 added to diagonal of error matrix
 EIGENVALUES OF SECOND-DERIVATIVE MATRIX:
        -5.4828e+03  9.6274e-01  9.8855e-01  1.0018e+00  1.0093e+00  1.0381e+00  5.4848e+03
 MINUIT WARNING IN HESSE   
 ============== MATRIX FORCED POS-DEF BY ADDING 5488.265692 TO DIAGONAL.
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 2 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 3 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 4 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 5 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== 1.13934e+08 added to diagonal of error matrix
 EIGENVALUES OF SECOND-DERIVATIVE MATRIX:
        -5.4824e+03  9.6363e-01  9.8888e-01  1.0017e+00  1.0091e+00  1.0371e+00  5.4844e+03
 MINUIT WARNING IN HESSE   
 ============== MATRIX FORCED POS-DEF BY ADDING 5487.891758 TO DIAGONAL.
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 2 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 3 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 4 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 5 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== 1.13934e+08 added to diagonal of error matrix
 EIGENVALUES OF SECOND-DERIVATIVE MATRIX:
        -5.4823e+03  9.6363e-01  9.8889e-01  1.0017e+00  1.0091e+00  1.0371e+00  5.4843e+03
 MINUIT WARNING IN HESSE   
 ============== MATRIX FORCED POS-DEF BY ADDING 5487.827361 TO DIAGONAL.
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 2 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 3 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 4 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 5 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== 1.13934e+08 added to diagonal of error matrix
 EIGENVALUES OF SECOND-DERIVATIVE MATRIX:
        -5.4824e+03  9.6364e-01  9.8889e-01  1.0017e+00  1.0091e+00  1.0371e+00  5.4844e+03
 MINUIT WARNING IN HESSE   
 ============== MATRIX FORCED POS-DEF BY ADDING 5487.871688 TO DIAGONAL.
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 2 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 3 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 4 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 5 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== 1.1394e+08 added to diagonal of error matrix
 EIGENVALUES OF SECOND-DERIVATIVE MATRIX:
        -5.4823e+03  9.6368e-01  9.8888e-01  1.0017e+00  1.0091e+00  1.0371e+00  5.4843e+03
 MINUIT WARNING IN HESSE   
 ============== MATRIX FORCED POS-DEF BY ADDING 5487.814033 TO DIAGONAL.
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 2 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 3 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 4 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 5 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== 1.14062e+08 added to diagonal of error matrix
 EIGENVALUES OF SECOND-DERIVATIVE MATRIX:
        -5.4717e+03  9.6363e-01  9.8944e-01  1.0019e+00  1.0091e+00  1.0391e+00  5.4737e+03
 MINUIT WARNING IN HESSE   
 ============== MATRIX FORCED POS-DEF BY ADDING 5477.216258 TO DIAGONAL.
 NEW MINIMUM FOUND.  GO BACK TO MINIMIZATION STEP.
 =================================================
                                                  V
                                                  V
                                                  V
                                               VVVVVVV
                                                VVVVV
                                                 VVV
                                                  V

 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 2 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 5 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== 1.08143e+08 added to diagonal of error matrix
 EIGENVALUES OF SECOND-DERIVATIVE MATRIX:
        -2.8115e+03  9.7971e-01  9.9408e-01  9.9998e-01  1.0094e+00  1.0477e+00  2.8135e+03
 MINUIT WARNING IN HESSE   
 ============== MATRIX FORCED POS-DEF BY ADDING 2814.346050 TO DIAGONAL.
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 2 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 5 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== 1.08138e+08 added to diagonal of error matrix
 EIGENVALUES OF SECOND-DERIVATIVE MATRIX:
        -2.6739e+03  9.7976e-01  9.9472e-01  9.9998e-01  1.0093e+00  1.0464e+00  2.6758e+03
 MINUIT WARNING IN HESSE   
 ============== MATRIX FORCED POS-DEF BY ADDING 2676.532240 TO DIAGONAL.
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 2 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 5 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== 1.08118e+08 added to diagonal of error matrix
 EIGENVALUES OF SECOND-DERIVATIVE MATRIX:
        -2.6716e+03  9.7976e-01  9.9473e-01  9.9998e-01  1.0093e+00  1.0464e+00  2.6736e+03
 MINUIT WARNING IN HESSE   
 ============== MATRIX FORCED POS-DEF BY ADDING 2674.255413 TO DIAGONAL.
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 2 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 3 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 5 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== 2.63331e+09 added to diagonal of error matrix
 EIGENVALUES OF SECOND-DERIVATIVE MATRIX:
        -2.7925e+04  9.7208e-01  9.9478e-01  9.9999e-01  1.0089e+00  1.0531e+00  2.7927e+04
 MINUIT WARNING IN HESSE   
 ============== MATRIX FORCED POS-DEF BY ADDING 27952.767050 TO DIAGONAL.
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 2 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 3 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 5 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== 2.63324e+09 added to diagonal of error matrix
 EIGENVALUES OF SECOND-DERIVATIVE MATRIX:
        -2.7924e+04  9.7213e-01  9.9494e-01  9.9999e-01  1.0087e+00  1.0531e+00  2.7926e+04
 MINUIT WARNING IN HESSE   
 ============== MATRIX FORCED POS-DEF BY ADDING 27952.381363 TO DIAGONAL.
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 2 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 3 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 5 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== 2.63288e+09 added to diagonal of error matrix
 EIGENVALUES OF SECOND-DERIVATIVE MATRIX:
        -2.7925e+04  9.7213e-01  9.9494e-01  9.9999e-01  1.0087e+00  1.0531e+00  2.7927e+04
 MINUIT WARNING IN HESSE   
 ============== MATRIX FORCED POS-DEF BY ADDING 27953.338626 TO DIAGONAL.
 MINUIT WARNING IN MIGRAD  
 ============== VARIABLE4 IS AT ITS LOWER ALLOWED LIMIT.
 MINUIT WARNING IN MIGRAD  
 ============== VARIABLE4 IS AT ITS LOWER ALLOWED LIMIT.
 MINUIT WARNING IN MIGRAD  
 ============== VARIABLE4 IS AT ITS LOWER ALLOWED LIMIT.
 MINUIT WARNING IN MIGRAD  
 ============== VARIABLE4 IS AT ITS LOWER ALLOWED LIMIT.
 MINUIT WARNING IN MIGRAD  
 ============== VARIABLE4 IS AT ITS LOWER ALLOWED LIMIT.
 MINUIT WARNING IN MIGRAD  
 ============== VARIABLE4 IS AT ITS LOWER ALLOWED LIMIT.
 MINUIT WARNING IN MIGRAD  
 ============== VARIABLE4 IS AT ITS LOWER ALLOWED LIMIT.
 MINUIT WARNING IN PARAMETR
 ============== VARIABLE2 BROUGHT BACK INSIDE LIMITS.
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 2 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 5 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== 2.25011e+09 added to diagonal of error matrix
 EIGENVALUES OF SECOND-DERIVATIVE MATRIX:
        -2.8082e+04  9.6041e-01  9.9971e-01  9.9996e-01  1.0005e+00  1.0543e+00  2.8084e+04
 MINUIT WARNING IN HESSE   
 ============== MATRIX FORCED POS-DEF BY ADDING 28109.919597 TO DIAGONAL.
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 2 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 5 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== 2.25002e+09 added to diagonal of error matrix
 EIGENVALUES OF SECOND-DERIVATIVE MATRIX:
        -2.8082e+04  9.6044e-01  9.9988e-01  9.9996e-01  1.0004e+00  1.0543e+00  2.8084e+04
 MINUIT WARNING IN HESSE   
 ============== MATRIX FORCED POS-DEF BY ADDING 28110.368212 TO DIAGONAL.
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 2 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 5 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== 2.2502e+09 added to diagonal of error matrix
 EIGENVALUES OF SECOND-DERIVATIVE MATRIX:
        -2.8082e+04  9.6044e-01  9.9988e-01  9.9996e-01  1.0004e+00  1.0543e+00  2.8084e+04
 MINUIT WARNING IN HESSE   
 ============== MATRIX FORCED POS-DEF BY ADDING 28110.204577 TO DIAGONAL.
 MINUIT WARNING IN MIGRAD  
 ============== Negative diagonal element 5 in Error Matrix
 MINUIT WARNING IN MIGRAD  
 ============== 1.00006 added to diagonal of error matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 2 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 3 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 4 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== 1.18583e+08 added to diagonal of error matrix
 EIGENVALUES OF SECOND-DERIVATIVE MATRIX:
        -9.3605e+03  8.4410e-01  9.9812e-01  1.0009e+00  1.0489e+00  2.0633e+00  9.3616e+03
 MINUIT WARNING IN HESSE   
 ============== MATRIX FORCED POS-DEF BY ADDING 9369.910511 TO DIAGONAL.
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 2 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 3 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 4 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== 1.18583e+08 added to diagonal of error matrix
 EIGENVALUES OF SECOND-DERIVATIVE MATRIX:
        -9.3246e+03  8.4165e-01  9.9816e-01  1.0009e+00  1.0481e+00  2.0635e+00  9.3257e+03
 MINUIT WARNING IN HESSE   
 ============== MATRIX FORCED POS-DEF BY ADDING 9333.928002 TO DIAGONAL.
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 2 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 3 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 4 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== 1.18584e+08 added to diagonal of error matrix
 EIGENVALUES OF SECOND-DERIVATIVE MATRIX:
        -9.3158e+03  8.4166e-01  9.9817e-01  1.0008e+00  1.0481e+00  2.0617e+00  9.3168e+03
 MINUIT WARNING IN HESSE   
 ============== MATRIX FORCED POS-DEF BY ADDING 9325.104127 TO DIAGONAL.
 MINUIT WARNING IN HESSE   
 ============== Negative diagonal element 1 in Error Matrix
 MINUIT WARNING IN HESSE   
 ============== 6.33324e+07 added to diagonal of error matrix
 EIGENVALUES OF SECOND-DERIVATIVE MATRIX:
        -2.3286e+01  3.1505e-01  4.7667e-01  9.9725e-01  2.2262e+00  2.5270e+01
 MINUIT WARNING IN HESSE   
 ============== MATRIX FORCED POS-DEF BY ADDING 23.310807 TO DIAGONAL.
 MINUIT WARNING IN MIGRAD  
 ============== Negative diagonal element 1 in Error Matrix
 MINUIT WARNING IN MIGRAD  
 ============== 1.00002 added to diagonal of error matrix
 NEW MINIMUM FOUND.  GO BACK TO MINIMIZATION STEP.
 =================================================
                                                  V
                                                  V
                                                  V
                                               VVVVVVV
                                                VVVVV
                                                 VVV
                                                  V

all fit results:
{'A': [0.038735728123325819, 0.00062930340150535446], 'Dx': [0.20212853661929309, 0.00041308899899128448], 'chisquare': 1769.845448980665, 'L': [32.120096422728864, 0.30653154050911624], 'A_d': [0.00045006352329785004, 2.5633926652224304e-05], 'L_d': [0.27019101850251248, 0.0062838472707905657], 'Dy': [-0.016783835745339815, 0.00038272814516204789], 'phase': [53.609175650120164, 0.0210343514950182]}
{'A': [0.048879514960423753, 0.00062158369361575705], 'Dx': [0.20530223306290551, 0.00041949920101647109], 'chisquare': 1741.4048067085255, 'L': [38.066466516384637, 0.41161921986775951], 'A_d': [0.0012209655836611932, 2.4354326528142067e-05], 'L_d': [0.44631670107669463, 0.0082694062048451755], 'Dy': [-0.015022827234218994, 0.00039197717717165403], 'phase': [-46.767377095285113, 0.019472467952308392]}
{'A': [0.049990564340049171, 0.0006916365848998185], 'Dx': [0.20743527393063133, 0.00059319878336516751], 'chisquare': 2304.7212431799339, 'L': [43.505270743250335, 1.4849131869723884], 'A_d': [0.0015930605202103543, 3.8893196231459815e-05], 'L_d': [0.39081363459069401, 0.028361170628201343], 'Dy': [-0.015597010448086479, 0.00040512991467167581], 'phase': [-2.5981762302533866, 0.031971803355261841]}
{'A': [0.10011942135483509, 9.1862580642310121e-06], 'Dx': [0.22793606213351225, 0.0004479589428498798], 'chisquare': 7376.6527826240035, 'L': [66.076280987397084, 0.9610191526361973], 'A_d': [0.0032388102806880648, 1.4717235222672098e-05], 'L_d': [0.81251528116409988, 0.018903777389622012], 'Dy': [-0.023032608626852635, 0.0004753767029015421], 'phase': [98.321579648970754, 0.014615763747002575]}
{'A': [0.0387359161913442, 0.00062940099865183008], 'Dx': [0.20212860666013199, 0.00041313012392052428], 'chisquare': 1769.8454500240689, 'L': [32.120344743209891, 0.30673360999531951], 'A_d': [0.00045007325799706344, 2.5658847713827537e-05], 'L_d': [0.27019572852700857, 0.0062890337166981447], 'Dy': [-0.016783987882146079, 0.0003826350861162453], 'phase': [-72.054511096277082, 0.021030491528151174]}
{'A': [0.046923283013887152, 0.00066642661056728891], 'Dx': [0.20596865321714297, 0.00045694025476183953], 'chisquare': 2968.5272520285816, 'L': [42.332162544570608, 0.40447498114254898], 'A_d': [0.0014657284615668953, 2.454316050368166e-05], 'L_d': [1.1246004127940523e-12, 0.00051757543109026694], 'Dy': [-0.016174723085596199, 0.00046594430469149017], 'phase': [72.89683690970088, 0.020145574515964881]}
{'A': [0.50149497291612111, 1.7099335483661271e-06], 'Dx': [-0.063902987364203412, 14.192611278141943], 'chisquare': 988365.64891865326, 'L': [17.237607143515355, 58.361034373142786], 'A_d': [0.010396009489150149, 0.56986003420996723], 'L_d': [0.0010110066425734199, 0.60132324469462928], 'Dy': [0.031676676715612473, 14.214645407490293], 'phase': [-34.793630950002452, 147.44244557352692]}
final fit results:
chi         =  1741.40480671
A           =  0.048880    +/-  0.000622
A_d         =  0.001221    +/-  0.000024
L           =  38.066467   +/-  0.411619
L_d         =  0.446317    +/-  0.008269
phase       =  -46.767377  +/-  0.019472
Dx          =  0.205302    +/-  0.000419
Dy          =  -0.015023   +/-  0.000392