FROM TH2F
constant
0.028309380592016996+-0.02040378446011556
chi2/ndof = 0.005164199928325407
plane
0.04487746812188309+-0.13742358291020407
invpt slope = 0.006044297608422513+-0.0178576965939259
theta slope = -0.02226402262671766+-0.11217091976654042
chi2/ndof = 0.003025844041478647
from tgraph2D
constant
0.03176296503875984+-0.0015904353832130592
chi2/ndof = 0.00018718186840338075
plane
0.05453168243561142+-0.006317027228925116
invpt slope = 0.007221083762439788+-0.0008851905274562914
theta slope = -0.030221117612744798+-0.005215150626043001
chi2/ndof = 8.20209147316366e-05