The image shows two polar plots, labeled as 'Fig. 5' and 'Fig. 6'. Both plots are circular with radial lines emanating from the center, creating a grid-like pattern. Each plot features a shaded, petal-shaped curve that appears to represent a directional pattern. **Fig. 5:** The upper plot is labeled 'Ω' on the left. The shaded area is more pronounced and symmetrical, resembling a rounded, four-leaf clover shape. The shading transitions from dark at the center to lighter towards the edges. **Fig. 6:** The lower plot is labeled 'A' on the left and has additional text 'H φ X' above it. The shaded area is more elongated and asymmetrical, with a larger lobe extending upwards and smaller lobes on the sides. The shading also transitions from dark to light, but the pattern is less uniform than in Fig. 5. The background is a pale yellow, giving the image an aged or vintage appearance. The lines and shading are created using a technique that resembles pen and ink or engraving.