FROM TH2F
constant
0.015466797482056396+-0.01381839777868369
chi2/ndof = 0.006442504001883125
plane
0.031312953448029875+-0.10127648079312151
invpt slope = 0.005201515171062923+-0.008898234602982452
theta slope = -0.02196851714604326+-0.08518647125537043
chi2/ndof = 0.001307536792233293
from tgraph2D
constant
0.02101423437219519+-0.001167696385422284
chi2/ndof = 0.00011589876212423675
plane
0.04225942696819944+-0.00391372114044626
invpt slope = 0.0049801929817998+-0.00033746399549377436
theta slope = -0.030096665547236178+-0.0033386330986519795
chi2/ndof = 2.498113073149627e-05