Calculated fitting coefficients for E7M15
cos(theta_pi)	f	chi2	A	dA	B	dB	C	dC
-0.875	3	1.521	1.16249		0.500972		-0.148263		-0.14823	0.049417
-0.625	3	0.8288	1.02536		0.0418869		0.388879		-0.14171	0.041647
-0.375	3	0.6142	1.3089		0.491598		-0.308997		-0.065767	0.03422
-0.125	3	1.008	1.16859		-0.119583		-0.352906		-0.067398	0.037403
0.125	3	1.011	1.55057		-0.191788		-0.617713		0.037519	0.045238
0.375	3	0.5736	1.48737		-0.0371626		-0.265928		0.076534	0.043135
0.625	3	0.577	1.5117		-0.598851		-0.142026		0.097191	0.049904
0.875	3	1.375	1.52539		-0.580827		0.222921		0.084257	0.041311