| # | Nuclide | Half-life (yr) | Decay Mode | Period | Mag of modul | Peak day | Ref | Group |
| 1 | 226Ra | 1600 | alpha decay | Annual | ~1.5E−3 | 30 | [1] | PTB |
| 2 | 154Eu | 8.59 | beta minus decay | Annual | ~1.5E−3 | 30 | [1] | PTB |
| RATIO 1:2 | NO | 0 | NA | [1] | PTB | |||
| 3 | 238Pu | 78.74 | alpha decay | Annual | ~2E−3 | −15 | [2] | Baylor |
| 4 | 3H | 12.3 | beta minus decay | Annual | 3.7E−3 | 45 | [3] | Unknown |
| 5 | 32Si | 170 | beta minus decay | Not reported | [4] | Brook-haven | ||
| 6 | 36Cl | 301,000 | beta minus decay | Not reported | [4] | Brook-haven | ||
| RATIO 5:6 | Annual | 0.7E−3 | 40 | [4] | Brook-haven | |||
| 7 | 54Mn | 312d | beta capture | Annual | ~1E−3 | NA | [5] | Purdue |
| 8 | 60Co | 5.27 | beta minus decay | Annual | ~1.5E−3 | ~90 | [6] | Moscow State |
| 9 | 90Sr | 28.9 | beta minus decay | Annual | ~1.5E−3 | ~60 | [6] | Moscow State |