FROM TH2F
constant
38.05202297487169+-0.9095151948835108
chi2/ndof = 58.07990668218867
plane
150.46428871217176+-5.506720295767972
invpt slope = -12.826256464304086+-1.1045427615902348
theta slope = -70.68121793506+-5.309062392837482
chi2/ndof = 43.457837083447025
from tgraph2D
constant
91.39967680830452+-7.010224512040579
chi2/ndof = 2457.1623856989827
plane
39.23968612428885+-29.925565062728282
invpt slope = 36.01200687061131+-6.442473586483547
theta slope = 2.6353267722707727+-25.52988014062251
chi2/ndof = 1538.5574699506724