FROM TH2F
constant
17.97126053547832+-0.4739628210105846
chi2/ndof = 65.7121604767326
plane
45.242476524507964+-2.2789807752461377
invpt slope = -7.54406066062447+-0.3481753329074675
theta slope = -6.030616916750137+-1.9728723711853686
chi2/ndof = 60.43117271173579
from tgraph2D
constant
81.14104020488854+-4.883025116789876
chi2/ndof = 2098.266216168035
plane
77.54310142729668+-24.549358625818467
invpt slope = 4.6156243057321635+-4.048643425139899
theta slope = -3.7636236586633003+-21.409978633592956
chi2/ndof = 2114.849661209988