FROM TH2F
constant
0.013392491043673483+-0.017446340489028163
chi2/ndof = 0.0012726358811540363
plane
0.05681747363990362+-0.263454257291104
invpt slope = -0.0014697661340595635+-0.011353537201698237
theta slope = -0.029402350332012044+-0.1933731568005595
chi2/ndof = 0.0004072072777564878
from tgraph2D
constant
0.014822889896971059+-0.0006203896004348023
chi2/ndof = 1.84743963037083e-05
plane
0.05689597875728256+-0.005437257582696234
invpt slope = -0.0014320725574051344+-0.00023499505808548772
theta slope = -0.029339077970819253+-0.0040914963036907965
chi2/ndof = 6.942489807207443e-06