FROM TH2F
constant
75.25121526839749+-1.3385423420661025
chi2/ndof = 52.93241484779076
plane
750.4942105927768+-20.267881885092486
invpt slope = -13.90634715195994+-1.0557785982691246
theta slope = -460.5087000966015+-14.760255908385892
chi2/ndof = 23.241643035121367
from tgraph2D
constant
129.3237796608882+-7.4208788426323515
chi2/ndof = 2478.1249251719096
plane
503.94444707165064+-98.80039046759238
invpt slope = -7.848558405653588+-4.053674375310261
theta slope = -268.4360728361946+-73.31816243349783
chi2/ndof = 1876.960300900943