Table 2. Measured response matrix R _ij between the BPMs selected for the AFC and the corrector magnets for ID23 and ID25.

	ID23		ID25
R ij (m rad−1)	Upstream (θ1)	Downstream (θ2)	Upstream (θ3)	Downstream (θ4)
BPM23-2 (x 1)	+26.4	+25.6	−3.07	+1.05
BPM24-5 (x 2)	+0.623	−3.29	+25.6	+25.8
BPM35-2 (x 3)	−2.08	+1.66	−22.8	−20.2
BPM46-2 (x 4)	−18.2	−20.9	+6.69	+2.71