Calculated fitting coefficients for E76M9
cos(theta_pi)	f	chi2	A	dA	B	dB	C	dC
0.125	3	4.165	0.11157		-0.0760479		0.0426553		-0.016087	0.010988
0.375	3	0.9515	0.121066		-0.0555017		0.044941		0.028658	0.011075
0.625	3	1.567	0.143858		-0.0305605		0.0301871		0.018373	0.0072851
0.875	3	3.504	0.141501		-0.0192413		0.0183417		0.014784	0.0066776