FROM TH2F
constant
0.03654534768033901+-0.020614216036427678
chi2/ndof = 0.01679930278481082
plane
0.11138346289496004+-0.15179370294186378
invpt slope = 0.010014651825496226+-0.013334549353865514
theta slope = -0.0823560342358454+-0.12494872260900905
chi2/ndof = 0.004772580940489544
from tgraph2D
constant
0.05128799754632241+-0.003968831373899673
chi2/ndof = 0.001417646022597432
plane
0.1630390857915049+-0.014343730050097552
invpt slope = 0.011367672323221273+-0.001479792387351336
theta slope = -0.1279586996414634+-0.012225641101574461
chi2/ndof = 0.000498281791310694