FROM TH2F
constant
0.038263148068891056+-0.023379828934848797
chi2/ndof = 0.014915840727818956
plane
0.07945970086111295+-0.25653864418018063
invpt slope = 0.006345339701623778+-0.011453170938887775
theta slope = -0.045375928325737995+-0.19913358247605428
chi2/ndof = 0.01010771283504957
from tgraph2D
constant
0.05772939334696649+-0.007543747399567634
chi2/ndof = 0.004609558112131774
plane
0.2612453095949092+-0.045985038228420094
invpt slope = 0.013155480808505144+-0.0016974568378801199
theta slope = -0.19681179328667653+-0.03493088563362709
chi2/ndof = 0.001902903058217059