Temporal variation of the normalized polarization (top row) and polarization degree (bottom row) from a pixel of 0.5′′ centered on an antinode in the base model. The color coding of different frequencies is denoted in the top-right plot. The relative perturbations of the magnetic field, density, and B-LOS angle averaged along the LOS (second row) are shown by solid, dotted, and dashed-dotted curves, respectively.