FROM TH2F
constant
0.03482638209796284+-0.017713023179508333
chi2/ndof = 0.008966073612770646
plane
0.059138897201339365+-0.11515717468432192
invpt slope = 0.004310900020695173+-0.008818593962978972
theta slope = -0.03025929797156799+-0.09540168348107443
chi2/ndof = 0.006301849321206179
from tgraph2D
constant
0.042260235737687175+-0.0018285965181937909
chi2/ndof = 0.0003878767662082314
plane
0.06753557480682777+-0.008524534880180647
invpt slope = 0.005478750367729616+-0.0007164288176122057
theta slope = -0.035956006163807695+-0.007263137878224159
chi2/ndof = 0.00024164680980823518