FROM TH2F
constant
0.017805707119328235+-0.01655095029506996
chi2/ndof = 0.03130003555132522
plane
0.00626668809084455+-0.04030136761320051
invpt slope = 0.026845160512503994+-0.02539947515980621
theta slope = -0.00915802288564687+-0.05186950955059166
chi2/ndof = 0.012900207383271956
from tgraph2D
constant
0.04051100743306747+-0.0048691121111095045
chi2/ndof = 0.0018966602203495766
plane
0.0001534079050029961+-0.0063930723206194005
invpt slope = 0.037641398102233846+-0.0035177066784251817
theta slope = 0.002097104634591739+-0.010352022239691427
chi2/ndof = 0.0007587500802033591