FROM TH2F
constant
0.019860861853765267+-0.01684418588192396
chi2/ndof = 0.008705044525429624
plane
0.0027430954805821688+-0.03958135139602966
invpt slope = 0.02049100200891773+-0.026784539359777683
theta slope = 0.0026566602748411498+-0.052553161527949165
chi2/ndof = 0.00020930679586716279
from tgraph2D
constant
0.024191095442214462+-0.0017084043320256292
chi2/ndof = 0.00025100350110261266
plane
0.003365580054953742+-0.0007089105390954153
invpt slope = 0.01959667552765796+-0.00041463064052103913
theta slope = 0.004303283809974417+-0.0009687271127486267
chi2/ndof = 9.05501516265157e-06