FROM TH2F
constant
0.02785647722969347+-0.016607429227250024
chi2/ndof = 0.01696972966422331
plane
0.08206957047355148+-0.09247715343866704
invpt slope = 0.0074723121384376295+-0.01013947811706731
theta slope = -0.06024846592282231+-0.07997875056583144
chi2/ndof = 0.007164173384419021
from tgraph2D
constant
0.04238912237415724+-0.0030345804339690506
chi2/ndof = 0.0009853285898567684
plane
0.10766628309722528+-0.009626923931645714
invpt slope = 0.01130500541643861+-0.001259498353350952
theta slope = -0.08742038947122693+-0.009067896040624067
chi2/ndof = 0.00042412949201529974