例如:
LAT LONG Cluster_ID
13.5330 -15.4180 1
13.5330 -15.4180 1
13.5330 -15.4180 1
13.5330 -15.4180 1
13.5330 -15.4170 2
13.5330 -15.4170 2
13.5330 -15.4170 2
13.5340 -14.9350 3
13.5340 -14.9350 3
13.5340 -15.9170 4
13.3670 -14.6190 5
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