Most significant component and amplitude of the all-feed PCA filter applied on scan 3354205. The bottom plot shows the first PCA component w_t⁰, which is common to all feeds. The right plot shows the corresponding amplitude a_ν⁰ for feed 6. The outer product of these two plots is shown in the central image and is the quantity subtracted from the TOD by the filter. As the filter is applied on normalized data, the amplitudes are all unitless, and the colorbar limits are ±5 × 10⁻⁴, half the range of those in Fig. 5.