FROM TH2F
constant
0.01602180537577814+-0.017900729245852932
chi2/ndof = 0.0100605005075684
plane
0.0963135706689347+-0.1656103121195326
invpt slope = -0.0007108904722368917+-0.01054387373751015
theta slope = -0.06579606784721673+-0.13169417652117288
chi2/ndof = 0.005105339426740467
from tgraph2D
constant
0.028768775600820792+-0.0043595714487823164
chi2/ndof = 0.0010643283400573655
plane
0.11542758143094092+-0.01703179393855634
invpt slope = 0.006651417299820981+-0.000948561053239441
theta slope = -0.09179586581297414+-0.014029319257662716
chi2/ndof = 0.0002333153610530144