| ID | ID2* | Date and Time (yyyy/mm/dd hh:mm:ss) |
Country | Number of clusters | (1) Diameter (km) | (2) Zone size (km) | Ratio (1)/(2) | Sim |
|---|---|---|---|---|---|---|---|---|
| A | 228594 | 2011/07/10 22:54:20 | Spain | 6 | 14 | 68 | 0.21 | 0.60 |
| B | 197186 | 2010/12/23 01:35:59 | Serbia | 7 | 3 | 169 | 0.02 | 0.57 |
| C | 219660 | 2011/04/28 23:30:44 | Bosnia and Herzegovina | 9 | 0 | 240 | 0.00 | 0.78 |
| D | 249669 | 2011/12/31 20:04:58 | Ohio | 10 | 53 | 509 | 0.10 | 0.67 |
| E | 221132 | 2011/05/01 16:47:28 | Spain | 26 | 13 | 974 | 0.01 | 0.65 |
| F | 232773 | 2011/08/20 02:00:24 | Southern Greece | 16 | 17 | 351 | 0.05 | 0.94 |
| G | 241504 | 2011/10/29 04:13:34 | Northern Italy | 29 | 22 | 501 | 0.04 | 0.76 |
| H | 242965 | 2011/11/05 07:12:44 | Oklahoma | 32 | 10 | 610 | 0.02 | 0.71 |
| I | 233197 | 2011/08/23 17:51:04 | Virginia | 33 | 77 | 1 797 | 0.04 | 0.69 |
| J | 237931 | 2011/10/04 02:40:46 | Romania | 33 | 7 | 708 | 0.01 | 0.61 |
| K | 196649 | 2010/11/03 00:56:54 | Serbia | 47 | 97 | 975 | 0.10 | 0.91 |
| L | 234981 | 2011/09/08 19:02:48 | Germany | 96 | 19 | 697 | 0.03 | 0.61 |
| M | 312831 | 2013/04/16 10:44:17 | Iran–/Pakistan border region | 90 | 10 | 5 583 | 0.00 | 0.50 |
| N | 317523 | 2013/05/17 13:43:22 | Southern Ontario | 140 | 24 | 2 099 | 0.01 | 0.36 |
| O | 338758 | 2013/10/12 13:11:54 | Crete, Greece | 205 | 2 | 2 877 | 0.00 | 0.38 |
The diameter of a cluster is the maximum distance between any two of its points. The zone size is the length of the diagonal of the rectangular zone encompassing the questionnaires. Sim is the clustering similarity with human/based clustering; this value is defined by equation (2) in the main article.
*ID2 is the EMSC–CSEM ID for the seismic event.
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