Table 4. Parameters of the clusters provided by the k-mean algorithm for the category, Street. ∗∗∗ indicates a significant difference (t-test, p < .001) between the cluster in term for FD or SA. (ns) indicates that differences were not significant.
| FD (ms) | SA(t − 1) | Number of cases | % | |
| Cluster 1 | 167.93 | 11.18 | 3,954 | 26.96 |
| Cluster 2 | 169.41(ns) | 2.49∗∗∗ | 10,708 | 73.03 |
| FD (ms) | SA(t + 1) | Number of cases | % | |
| Cluster 1 | 169.41 | 11.2 | 4,223 | 27.05 |
| Cluster 2 | 169.64(ns) | 2.47∗∗∗ | 11,388 | 72.94 |