FROM TH2F
constant
15.790390032140802+-0.39345615426938385
chi2/ndof = 12.807182124310154
plane
47.708424663448916+-3.00613233518201
invpt slope = -2.0708701704357892+-0.1834854307753435
theta slope = -20.849616146841093+-2.348774189494999
chi2/ndof = 11.517017240914393
from tgraph2D
constant
28.875241657794035+-2.4808106338995506
chi2/ndof = 652.3686681766521
plane
74.73336036749718+-17.684588514578675
invpt slope = -3.059510660197883+-1.094092157866529
theta slope = -32.02993007327484+-15.204967868721013
chi2/ndof = 601.7127047707896