| Key | Count |
|---|---|
| lat | 13713 |
| lon | 13713 |
| timestamp | 13713 |
| userid | 13713 |
| version | 13713 |
| surveillance | 8537 |
| operator | 2040 |
| name | 2002 |
| source | 1883 |
| camera:type | 511 |
| note | 453 |
| surveillance:type | 381 |
| created_by | 369 |
| description | 343 |
| ref | 331 |
| url | 327 |
| FIXME | 317 |
| amenity | 246 |
| highway | 221 |
| camera:mount | 202 |
| website | 190 |
| source:url | 177 |
| addr:street | 145 |
| wheelchair | 131 |
| revolving | 123 |
| addr:housenumber | 119 |
| addr:city | 115 |
| source:website | 113 |
| addr:postcode | 108 |
| contact:webcam | 108 |