************************** V covariance matrix contribution from systematic uncertainty V_syst*************************
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# Error values in this matrix are given in relative terms  V_syst_rel.
#V_syst[a,b] = V_syst_rel[a, b] * sigma^{Lin,g1} * sigma^{Lin,g2}, where sigma^{Lin,g1} and sigma^{Lin,g2} are the linear function preditced IBD yield in different g-th fission groups, as defined by Equation.5 in the paper.
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# The covariance matrix V, properly combined with the statistical covariance matrix,
# V = V_stat + V_syst, where V_stat is the digonal statistic covariance martrix from the "IBDYieldEvolutionInformation.txt" material.
# V is used to determine best-fit values for sig_bar and (dsig/df239)/sig_bar,
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# Here is the V_syst_rel[13,13], corresponding to the 13 points in the upper part of Fig.1. The (0,0) starting from the upper left corner.
  0           1          2         3           4           5           6           7           8           9           10          11          12 
0 0.000162361 0.00016258 0.0001626 0.000159562 0.000157916 0.000157516 0.000156881 0.000157628 0.000157421 0.000158374 0.000158752 0.000157459 0.000159903
1 0.00016258 0.000162828 0.000162833 0.000159619 0.000157966 0.000157559 0.000156928 0.000157694 0.000157501 0.00015849 0.000158908 0.000157554 0.000160212
2 0.0001626 0.000162833 0.000162856 0.000159703 0.000157999 0.000157586 0.000156934 0.000157707 0.000157494 0.000158483 0.000158869 0.000157544 0.00016008
3 0.000159562 0.000159619 0.000159703 0.000158496 0.000157487 0.000157266 0.000156879 0.000157262 0.000157076 0.00015753 0.000157599 0.000157042 0.000157655
4 0.000157916 0.000157966 0.000157999 0.000157487 0.000157102 0.000157016 0.000156871 0.000157026 0.000156967 0.000157151 0.000157206 0.000156949 0.000157209
5 0.000157516 0.000157559 0.000157586 0.000157266 0.000157016 0.000156971 0.000156883 0.000156982 0.000156948 0.000157064 0.000157098 0.000156922 0.000157049
6 0.000156881 0.000156928 0.000156934 0.000156879 0.000156871 0.000156883 0.000156907 0.000156908 0.000156924 0.000156926 0.000156955 0.000156898 0.000156898
7 0.000157628 0.000157694 0.000157707 0.000157262 0.000157026 0.000156982 0.000156908 0.000157016 0.000156999 0.000157135 0.000157202 0.00015699 0.000157298
8 0.000157421 0.000157501 0.000157494 0.000157076 0.000156967 0.000156948 0.000156924 0.000156999 0.000157022 0.000157126 0.000157216 0.00015703 0.000157423
9 0.000158374 0.00015849 0.000158483 0.00015753 0.000157151 0.000157064 0.000156926 0.000157135 0.000157126 0.000157404 0.00015756 0.000157163 0.000158021
10 0.000158752 0.000158908 0.000158869 0.000157599 0.000157206 0.000157098 0.000156955 0.000157202 0.000157216 0.00015756 0.000157812 0.000157286 0.000158564
11 0.000157459 0.000157554 0.000157544 0.000157042 0.000156949 0.000156922 0.000156898 0.00015699 0.00015703 0.000157163 0.000157286 0.000157125 0.000157704
12 0.000159903 0.000160212 0.00016008 0.000157655 0.000157209 0.000157049 0.000156898 0.000157298 0.000157423 0.000158021 0.000158564 0.000157704 0.000160589