Slope (0)
| 0 to 1 percent slopes |
| 0 to 2 percent slopes |
| 0 to 3 percent slopes |
| 0 to 4 percent slopes |
| 0 to 5 percent slopes |
| 1 to 3 percent slopes |
| 1 to 4 percent slopes |
| 1 to 5 percent slopes |
| 1 to 8 percent slopes |
| 1 to 10 percent slopes |
| 2 to 5 percent slopes |
| 2 to 8 percent slopes |
| 3 to 5 percent slopes |
| 3 to 8 percent slopes |
| 3 to 12 percent slopes |
| 4 to 12 percent slopes |
| 5 to 8 percent slopes |
| 5 to 12 percent slopes |
| 5 to 15 percent slopes |
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