Table 1.
Comparison of airborne 106Ru at high-altitude and at closest low-altitude sampling locations (with similar time stamps)
| Country | High-altitude location (meters above sealevel) | Date (2017) | 106Ru (mBq·m−3) | Nearest low-altitude location | Date (2017) | 106Ru (mBq·m−3) |
| Austria | Sonnblick (3,105) | October 2 | 0.17 ± 0.11 | Klagenfurt | October 2 | 4.90 ± 0.34 |
| Bulgaria | Moussala peak (2,925) | October 3 | 1.8 ± 0.54 | Yana | September 29 to October 4 | 17.6 ± 1.6 |
| Greece | Helmos Mountain peak (2,314) | September 27 to September 29 | 0.99 ± 0.19 | Athens | September 27 to October 3 | 2.64 ± 0.63 |
| Germany | Zugspitze (2,964) | September 25 to October 2 | <0.026 | Garmisch-Partenkirchen | September 25 to October 2 | <0.023 |