FROM TH2F
constant
0.03535901199559147+-0.016492192106134614
chi2/ndof = 0.025885721632162493
plane
0.06006761356402496+-0.09266179352442046
invpt slope = 0.011177239180427172+-0.008689948768756355
theta slope = -0.042332256466157445+-0.08021893308133499
chi2/ndof = 0.012893776194619686
from tgraph2D
constant
0.058447916700348386+-0.004094781006665753
chi2/ndof = 0.002297110713096754
plane
0.04115781620708696+-0.013102773460966083
invpt slope = 0.01694022055587933+-0.0011511584306497192
theta slope = -0.031141994426292428+-0.011746621946562993
chi2/ndof = 0.0008803321607586274