Cs-137 Half-life
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Cs-137 Integral Table
| Days | Integral | Ln(Integral) |
| 105 | 19.24 +/- 0.0875 | 2.956 +/- 0.0045 |
| 156 | 22.45 +/- 0.0854 | 3.111 +/- 0.0038 |
| 226 | 3.242 +/- 0.0108 | 1.176 +/- 0.0033 |
| 242 | 22.124 +/- 0.1474 | 3.097 +/- 0.0067 |
Certificate Half-life: 30.0 +/- 0.2 year
Cs-137 Integral Table (Ratio from amplitude = 5.5)
| Days | Integral | Ln(Integral) |
| 105 | 19.24 +/- 0.0875 | 2.956 +/- 0.0045 |
| 156 | 22.45 +/- 0.0854 | 3.111 +/- 0.0038 |
| 226 | 17.942 +/- 0.0526 | 2.887 +/- 0.0029 |
| 242 | 22.124 +/- 0.1474 | 3.097 +/- 0.0067 |
Certificate Half-life: 30.0 +/- 0.2 year
Cs-137 Integral Table (Ratio from integrals of second and fourth points = 6.8)
| Days | Integral | Ln(Integral) |
| 105 | 19.24 +/- 0.0875 | 2.956 +/- 0.0045 |
| 156 | 22.45 +/- 0.0854 | 3.111 +/- 0.0038 |
| 226 | 22.186 +/- 0.0467 | 3.0995 +/- 0.0021 |
| 242 | 22.124 +/- 0.1474 | 3.097 +/- 0.0067 |
Certificate Half-life: 30.0 +/- 0.2 year
Cs-137, Co-60, and Mn-54 Half-lives
Cs-137 Certificate Half-life: 30.0 +/- 0.2 year
Co-60 Certificate Half-life: 5.271 +/- 0.001 year
Mn-54 Certificate Half-life: 312.20 +/- 0.07 days