FROM TH2F
constant
20.819771331557302+-0.7040659345216383
chi2/ndof = 60.495845040890686
plane
-54.33444983980914+-4.673227301060252
invpt slope = -8.337089428647975+-0.8128596424911735
theta slope = 101.55120787926046+-4.51542541632928
chi2/ndof = 44.32284878507161
from tgraph2D
constant
73.00500097235323+-6.853026080077669
chi2/ndof = 2254.2703895486975
plane
-77.16762095687614+-40.3102206819873
invpt slope = 10.914335392185327+-6.615526603926099
theta slope = 132.92161893103935+-37.869482223643004
chi2/ndof = 1764.6125681846356