Thresholds for the cell density obtained using the head/tail break and the corresponding similarity values for the grid-based approach.

Thresholds for the cell density obtained using the head/tail break and the corresponding similarity values for the grid-based approach.通过头/尾断裂法（head/tail break）得到的细胞密度阈值，以及基于网格的方法（grid-based approach）所对应的相似度值。