| Historic (1865-12-01 to
2009-12-20) |
| Rank |
Entity Name |
Count |
Score |
Coref./Ref. |
| 1 |
Co
|
378 |
3587.0 |
  |
| 2 |
Pt
|
397 |
3520.1 |
  |
| 3 |
H2O
|
361 |
3012.9 |
  |
| 4 |
Ru
|
258 |
2481.1 |
  |
| 5 |
NH4+
|
240 |
2182.7 |
  |
| 6 |
CO2
|
271 |
1852.5 |
  |
| 7 |
H2S
|
140 |
1387.8 |
  |
| 8 |
PtCl2
|
107 |
1190.1 |
  |
| 9 |
DNA
|
247 |
1161.4 |
  |
| 10 |
Cl
|
146 |
1115.5 |
  |
| 11 |
N2
|
122 |
1101.0 |
  |
| 12 |
CH4
|
106 |
1041.2 |
  |
| 13 |
platinum
|
130 |
1039.4 |
  |
| 14 |
NO3
|
108 |
981.0 |
  |
| 15 |
nitrogen
|
164 |
979.3 |
  |
|
| 10 years (1999-12-23 to
2009-12-20) |
| Rank |
Entity Name |
Count |
Score |
Coref./Ref. |
| 1 |
Ru
|
197 |
1757.5 |
  |
| 2 |
H2O
|
202 |
1677.2 |
  |
| 3 |
H2S
|
124 |
1144.9 |
  |
| 4 |
NH4+
|
118 |
1034.4 |
  |
| 5 |
Co
|
112 |
985.6 |
  |
| 6 |
Pt
|
114 |
949.1 |
  |
| 7 |
CO2
|
130 |
854.2 |
  |
| 8 |
N2O
|
88 |
760.2 |
  |
| 9 |
NO
|
103 |
689.8 |
  |
| 10 |
CN
|
70 |
653.2 |
  |
| 11 |
PtCl2
|
58 |
627.7 |
  |
| 12 |
NO3
|
72 |
596.3 |
  |
| 13 |
CH4
|
65 |
596.1 |
  |
| 14 |
SO2
|
69 |
572.5 |
  |
| 15 |
N2
|
69 |
560.6 |
  |
|
| 365 days (2008-12-20 to
2009-12-20) |
| Rank |
Entity Name |
Count |
Score |
Coref./Ref. |
| 1 |
CLE
|
8 |
87.6 |
  |
| 2 |
H2S
|
9 |
85.6 |
  |
| 3 |
NH
|
7 |
55.5 |
  |
| 4 |
N2O
|
5 |
51.1 |
  |
| 5 |
CH3OH
|
4 |
48.8 |
  |
| 6 |
NO
|
7 |
48.6 |
  |
| 7 |
NH4
|
4 |
47.9 |
  |
| 8 |
SO2
|
4 |
42.2 |
  |
| 9 |
Si-doped TiO2
|
3 |
35.9 |
  |
| 10 |
Ru
|
2 |
25.0 |
  |
| 11 |
Co
|
3 |
24.5 |
  |
| 12 |
benzene
|
2 |
24.4 |
  |
| 13 |
CHCl3
|
2 |
21.9 |
  |
| 14 |
PtCl2
|
2 |
20.8 |
  |
| 15 |
NH4+
|
2 |
20.5 |
  |
|