FROM TH2F
constant
0.059842394201303314+-0.0007671816061468076
chi2/ndof = 8.178149499206375
plane
-0.06805412213081011+-0.003637870684278997
invpt slope = 0.06287048041161025+-0.0014798403982815502
theta slope = 0.013002007320570025+-0.003126143608941694
chi2/ndof = 1.715918182885866
from tgraph2D
constant
0.012337106246283439+-4.3324785124125355e-05
chi2/ndof = 232.15059048751826
plane
0.0006668208302696452+-6.971325387559915e-05
invpt slope = 0.019799219415708377+-9.730562458230962e-05
theta slope = -0.0032083229387368257+-0.0001558054367476862
chi2/ndof = 59.92998562720901