FROM TH2F
constant
0.023469551591848947+-0.023362438345650816
chi2/ndof = 0.008511859717602443
plane
0.07648956228554754+-0.1706822176377792
invpt slope = 0.005480272784980944+-0.029425026451495567
theta slope = -0.05235060134321887+-0.1343885327912571
chi2/ndof = 0.0034325756086459325
from tgraph2D
constant
0.030406332691517303+-0.002476591476740877
chi2/ndof = 0.0002821412457566452
plane
0.09495995373390564+-0.0056679113465115515
invpt slope = 0.004333428822253065+-0.0011913256270585913
theta slope = -0.06476856713395411+-0.004646102685560077
chi2/ndof = 4.8104795776654816e-05