FROM TH2F
constant
5.5713453658406165+-0.21637474030996212
chi2/ndof = 0.38346221744170994
plane
8.951952138198857+-1.5415769772377124
invpt slope = -0.09295024686218015+-0.10352317083094205
theta slope = -2.6779596962309293+-1.2931329019678404
chi2/ndof = 0.3473045337250009
from tgraph2D
constant
5.948577247189435+-0.12794569205387338
chi2/ndof = 2.029892421232157
plane
10.706116058179637+-0.7162529338368712
invpt slope = -0.01755755210478225+-0.04907344386924779
theta slope = -4.210491322221734+-0.6183991582383436
chi2/ndof = 1.4891395556259606