FROM TH2F
constant
0.022395873752264327+-0.017166320198748718
chi2/ndof = 0.007681138151660971
plane
0.05504057479970581+-0.07626831570947602
invpt slope = -0.00541347235604112+-0.016613755873254518
theta slope = -0.022525504129797487+-0.05705644570320079
chi2/ndof = 0.005236096078641575
from tgraph2D
constant
0.03061779448565799+-0.0015026627954840396
chi2/ndof = 0.00019418761101909805
plane
0.0659998813216863+-0.0042529015017712946
invpt slope = -0.004014339463744927+-0.0009781328809717689
theta slope = -0.031600558232551444+-0.003942476192990941
chi2/ndof = 0.00010495138711402541