FROM TH2F
constant
0.03931343667361373+-0.01658068567024326
chi2/ndof = 0.021103199818221414
plane
0.08594816926804653+-0.0902265869366559
invpt slope = 0.010965547982180503+-0.008163950205882528
theta slope = -0.06169514721881482+-0.07697388819491567
chi2/ndof = 0.006222028371263709
from tgraph2D
constant
0.05731865340880339+-0.0027376857028703254
chi2/ndof = 0.00113173337450514
plane
0.09273037178376188+-0.006457054261666129
invpt slope = 0.01291052020859857+-0.0005862644024619868
theta slope = -0.06863618816845261+-0.0058349222638850754
chi2/ndof = 0.0002516347742338923