FROM TH2F
constant
0.02619994793228891+-0.016694994768307877
chi2/ndof = 0.01337834672577659
plane
0.011710231979232485+-0.11293929685893589
invpt slope = 0.002663730567350797+-0.008558237596121097
theta slope = 0.006461632328542005+-0.09578916765976608
chi2/ndof = 0.01259330226786566
from tgraph2D
constant
0.0379427269668724+-0.0019590930618279836
chi2/ndof = 0.0003799665168446081
plane
0.05766738292284925+-0.009021764688138702
invpt slope = 0.006711005927518395+-0.0007946232767088018
theta slope = -0.03518976494097534+-0.007803446723458043
chi2/ndof = 0.00020379329017904775