Table 3.
Results of k-means cluster analysis with the number of clusters set to k = 4*
| Region | CT | MA | MD | ME | MN | NH | NJ | NY | PA | RI | VA | WI |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| North | 2 | 7 | 0 | 15 | 1 | 10 | 0 | 2 | 0 | 2 | 0 | 3 |
| East | 9 | 3 | 1 | 0 | 0 | 2 | 10 | 10 | 9 | 11 | 0 | 0 |
| South | 0 | 0 | 15 | 0 | 0 | 0 | 5 | 0 | 5 | 0 | 16 | 0 |
| Midwest | 5 | 6 | 0 | 1 | 15 | 4 | 1 | 4 | 2 | 3 | 0 | 13 |
*
Each column represents the number of years from 1992 to 2007 for each state that were clustered within a particular region based on the annual growing degree days (GDD), annual precipitation, and mean weekly saturation deficit for that year. Bolded values indicate the region into which each state was grouped.