| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| proton mass in mev | 1.38 | 0.3 | 2958 | 36 | 18 |
| proton | 1.43 | 0.4 | 2167 | 61 | 6 |
| mass | 1.82 | 0.6 | 495 | 10 | 4 |
| in | 0.5 | 0.8 | 58 | 96 | 2 |
| mev | 0.58 | 0.1 | 7548 | 77 | 3 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| proton mass in mev | 1.53 | 0.5 | 3444 | 58 |
| proton mass in mev/c 2 | 0.17 | 0.1 | 5754 | 27 |
| rest mass of proton in mev | 0.95 | 0.4 | 5886 | 17 |
| proton mass mev/c2 | 0.37 | 1 | 5950 | 75 |
| proton mass energy in mev | 0.41 | 0.5 | 3784 | 99 |
