| Historic (1865-12-01 to
2009-12-20) |
| Rank |
Entity Name |
Count |
Score |
Coref./Ref. |
| 1 |
radon
|
327 |
2566.4 |
  |
| 2 |
Ra
|
97 |
904.4 |
  |
| 3 |
Th
|
81 |
710.6 |
  |
| 4 |
radium
|
42 |
422.5 |
  |
| 5 |
Rn
|
43 |
416.8 |
  |
| 6 |
L-1
|
36 |
413.5 |
  |
| 7 |
Pu
|
26 |
264.6 |
  |
| 8 |
radionuclide
|
28 |
233.9 |
  |
| 9 |
Chernobyl
|
25 |
231.2 |
  |
| 10 |
uranium
|
25 |
211.4 |
  |
| 11 |
Radon
|
20 |
206.8 |
  |
| 12 |
plutonium
|
15 |
164.3 |
  |
| 13 |
tritium
|
15 |
155.1 |
  |
| 14 |
mice
|
21 |
136.4 |
  |
| 15 |
Ci
|
10 |
136.1 |
  |
|
| 10 years (1999-12-23 to
2009-12-20) |
| Rank |
Entity Name |
Count |
Score |
Coref./Ref. |
| 1 |
radon
|
237 |
1732.1 |
  |
| 2 |
Ra
|
96 |
820.3 |
  |
| 3 |
Th
|
79 |
631.6 |
  |
| 4 |
radium
|
37 |
343.7 |
  |
| 5 |
Pu
|
21 |
200.9 |
  |
| 6 |
Rn
|
20 |
177.6 |
  |
| 7 |
uranium
|
21 |
159.9 |
  |
| 8 |
radionuclide
|
20 |
157.9 |
  |
| 9 |
Radon
|
15 |
143.3 |
  |
| 10 |
Chernobyl
|
15 |
129.3 |
  |
| 11 |
Po
|
10 |
103.5 |
  |
| 12 |
MBq
|
9 |
89.8 |
  |
| 13 |
Pb
|
11 |
84.2 |
  |
| 14 |
UK
|
12 |
79.8 |
  |
| 15 |
tritium
|
7 |
68.4 |
  |
|
|