| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| history of gps navigation systems | 1.26 | 0.7 | 1193 | 84 | 33 |
| history | 0.1 | 0.3 | 2630 | 29 | 7 |
| of | 1.52 | 0.9 | 2209 | 77 | 2 |
| gps | 0.14 | 0.4 | 5436 | 93 | 3 |
| navigation | 0.83 | 0.6 | 9418 | 50 | 10 |
| systems | 1.59 | 0.9 | 3516 | 26 | 7 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| history of gps navigation systems | 0.39 | 0.1 | 7494 | 63 |
