Polarization phi (degrees) alpha' (eV*Angstrom^-3) 
157.5	-0.837
146.25	-0.001
135	0.802
123.75	1.437
112.5	1.61
101.25	1.437
90	0.837
67.5	-0.001
45	-0.837
22.5	-1.398
0	-1.616
-11.25	-1.398
-22.5	-0.837
-33.75	-0.001
-45	0.802
-56.25	1.437
-67.5	1.61
-78.75	1.437
-90	0.802
-112.5	-0.001
-135	-0.837
-157.5	-1.398
-180	-1.616