(a) Observed ratio ﹩\langle M_{X}\mathstrut{\cal N} \rangle / ( \langle \mathstrut{\cal N} ^{2}\rangle \langle M^{2}_{\mathrm{ap}\,}\rangle ) ^{1/ 2}﹩ as a function of aperture size. This corresponds to the results when the phase of the shear is increased by ﹩\pi / 2﹩. If the signal presented in Figure 3a is caused by lensing, it should vanish here, as it does. (b) Ratio of the B mode autocorrelation ﹩\langle M^{2}_{X}\rangle ﹩ and the galaxy autocorrelation ﹩\langle \mathstrut{\cal N} ^{2}\rangle ﹩ as a function of aperture size. The results suggest a residual B mode, which is attributed to systematics (note that the points at different scales are somewhat correlated). The amplitude of this signal is added to the error estimates in Figure 3b as a conservative limit. We note that the amplitude of the B mode signal is small compared to the lensing (E mode) signal.