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Derived values of Hp(10) per Ka and Hp(0.07) per Ka with badge under 0.25 mm Pb apron.
| Tube potential (kV)a | Multiplier |
|||
|---|---|---|---|---|
| <1949 | 1949-1954 | 1955-1968 | >1968 | |
| All organs but skin: Hp(10) per Ka | ||||
| 70 | 1.75 | 1.75 | 1.77 | 1.78 |
| 80 | 1.81 | 1.82 | 1.83 | 1.84 |
| 90 | 1.85 | 1.85 | 1.86 | 1.86 |
|
Skin: Hp(0.07) per Ka | ||||
| 70 | 1.62 | 1.63 | 1.63 | 1.64 |
| 80 | 1.66 | 1.67 | 1.67 | 1.68 |
| 90 | 1.68 | 1.69 | 1.69 | 1.69 |
values within single time-periods are considered as equally probable
