Calculated fitting coefficients for E76M20
cos(theta_pi)	f	chi2	A	dA	B	dB	C	dC
-0.875	3	4.874	1.45523		0.608704		-1.43311		-0.091827	0.045444
-0.625	3	3.955	0.936064		0.050448		-0.304977		-0.021759	0.021842
-0.375	3	2.027	0.979417		-0.0999645		0.010532		-0.038361	0.018136
-0.125	3	1.275	1.20823		-0.201556		0.230453		-0.030689	0.018516
0.125	3	0.5871	1.40656		-0.312412		0.529199		-0.053259	0.018926
0.375	3	1.109	1.73164		-0.262871		0.389534		-0.05205	0.02375
0.625	3	1.037	2.06366		-0.191736		0.498455		-0.079165	0.022099
0.875	3	1.475	2.6205		-0.108913		0.45648		-0.033234	0.020292