FROM TH2F
constant
0.01578220097821719+-0.020379427822992506
chi2/ndof = 0.01426055958636558
plane
0.10540599575553647+-0.1845215038084213
invpt slope = 0.0036057152045092244+-0.02821628105459279
theta slope = -0.07716985214970158+-0.13888112343564207
chi2/ndof = 0.0048143180511132
from tgraph2D
constant
0.028341024355662492+-0.002256161419398003
chi2/ndof = 0.00020870083836447501
plane
0.08469290745653953+-0.008807603353888282
invpt slope = 0.00546438902747249+-0.0012526696063144287
theta slope = -0.05754603571647991+-0.006849624478019193
chi2/ndof = 4.632565224406524e-05