A robotic explorer has gathered seismic data about the internal structure of a newly discovered rocky exoplanet, Aegis-7. The planet has a layered structure similar to Earth as shown in the diagram.
Table 1.1 shows density and seismic velocity data at different boundaries within Aegis-7.
| Position | Density (g/cm3\text{g/cm}^3g/cm3) | Longitudinal wave speed (km/s\text{km/s}km/s) | Transverse wave speed (km/s\text{km/s}km/s) |
|---|---|---|---|
| Top of crust | 2.5 | 4.80 | 2.80 |
| Top of mantle | 3.8 | 7.20 | 4.10 |
| Top of outer core | 8.5 | 7.50 | - |
| Bottom of outer core | 11.0 | 9.40 | - |
Describe what information the data in Table 1.1 gives about the structure of Aegis-7. In your answer, you should explain any trends in the data and how they relate to the properties of the layers.