A river basin exhibits the following stream orders and corresponding stream lengths:
| Stream Order (n) | Total Stream Length (Ln) |
|---|---|
| 1 | 12 km |
| 2 | 24 km |
| 3 | 36 km |
| 4 | 48 km |
Using Horton’s Law of Stream Length Ratio, calculate the stream length ratio (SLR) for stream orders 3 and 4.
1
1.25
2
2.0
3
1.4
4
0.75