FROM TH2F
constant
0.027672200855445275+-0.016552407278221003
chi2/ndof = 0.019518811558499372
plane
0.08191330875841597+-0.0960891502159215
invpt slope = 0.007276908103197251+-0.009961345287276189
theta slope = -0.06005157161224878+-0.08254914178339195
chi2/ndof = 0.009882679834588971
from tgraph2D
constant
0.044582409935162826+-0.0037148799411082104
chi2/ndof = 0.0014766356280650989
plane
0.13065183039928177+-0.012744447625516011
invpt slope = 0.01222578562752846+-0.0015655810442328155
theta slope = -0.10933892075727838+-0.011770442086371341
chi2/ndof = 0.0006775593949157262