Species that exhibited substantial change in percentage of trees classified as good between the northwestern and southeastern halves of the state.
| Northwest | Southeast | |||
|---|---|---|---|---|
| % good | Number | % good | Number | |
| Sugar maple (Acer saccharum) | 94 | 3134 | 84 | 3680 |
| Silver maple (Acer saccharinum) | 92 | 2932 | 80 | 1913 |
| Norway maple (Acer platanoides) | 95 | 2353 | 80 | 930 |