A group of A-level geography students carried out a physical fieldwork investigation on a coastal spit to study sediment sorting along the shoreline. They measured the mean pebble diameter at five different survey sites downstream from the source of longshore drift.
Complete Figure 1c by plotting the mean pebble diameter data for Site 4 and Site 5 from the table below.
| Survey site | Mean pebble diameter (cm) |
|---|---|
| Site 4 | 3.5 |
| Site 5 | 1.8 |
