Table 4 Spearman's rank correlation coefficients between accessibility score of conventional and optimized 2SFCA methods
| Â | Â | Optimized 2SFCA method | |||
|---|---|---|---|---|---|
| Â | Â | 500 m | 1 Km | 2 Km | 3 Km |
Conventional | 500 m | .595** | Â | Â | Â |
   2SFCA | 1 Km |  | .729** |  |  |
   method | 2 Km |  |  | .760** |  |
| Â | 3 Km | Â | Â | Â | .786** |