| Region | Total | RU.1* | % |
|---|---|---|---|
| Asia / Israel | 114 | 13 | 11% |
| Asia / South_Korea | 74 | 5 | 7% |
| Europe / Portugal | 12 | 1 | 8% |
| Europe / Spain | 124 | 7 | 6% |
| Europe / Sweden | 32 | 1 | 3% |
| North America / Canada | 412 | 1 | 0% |
| North America / USA | 747 | 3 | 0% |
German environmental samples are excluded by default.