| a (RBinitial) | b (mass loss rate) | R2 | |
| Q forest | |||
| Course | 069 | −5 × 10−5 | 0.84 |
| Medium | 168 | −4 × 10−5 | 0.78 |
| Fine | 359 | −2 × 10−5 | 0.71 |
| Total | 596 | ||
| L forest | |||
| Course | 52 | −8 × 10−5 | 0.49 |
| Medium | 144 | −8 × 10−5 | 0.51 |
| Fine | 117 | −9 × 10−5 | 0.85 |
| Total | 312 | ||
| P forest | |||
| Course | 217 | −6 × 10−5 | 0.74 |
| Medium | 278 | −7 × 10−5 | 0.86 |
| Fine | 211 | −8 × 10−5 | 0.63 |
| Total | 706 |