| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| what are vacuum tubes | 1.06 | 0.3 | 1910 | 85 | 21 |
| what | 1.78 | 0.1 | 5533 | 22 | 4 |
| are | 0.46 | 0.7 | 8376 | 42 | 3 |
| vacuum | 1.16 | 0.3 | 4475 | 2 | 6 |
| tubes | 0.04 | 1 | 5834 | 30 | 5 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| what are vacuum tubes | 1.27 | 0.7 | 5716 | 40 |
| what are vacuum tubes in computers | 0.38 | 0.5 | 3749 | 14 |
| what are vacuum tubes worth | 0.6 | 0.5 | 9715 | 22 |
| what are vacuum tubes made of | 0.5 | 0.7 | 2836 | 97 |
| what are vacuum tubes used for today | 1.32 | 0.4 | 4385 | 68 |
| vacuum tubes in computers | 0.97 | 0.8 | 6808 | 41 |
| vacuum tubes for sale | 1.64 | 0.7 | 5552 | 59 |
| vacuum tubes computer | 0.3 | 0.7 | 3374 | 97 |
| vacuum tubes images | 0.92 | 0.9 | 8661 | 63 |
| viva tubes vacuum tubes | 0.09 | 0.8 | 6989 | 83 |
| vacuum blood collection tubes | 0.24 | 0.9 | 3933 | 94 |
| vacuum tubes inc | 1.74 | 1 | 9422 | 76 |
| vacuum tubes first generation computers | 0.41 | 0.6 | 359 | 78 |
| are vacuum tubes still made | 1.64 | 0.8 | 5173 | 47 |
| are vacuum tubes still used | 1.81 | 0.1 | 4111 | 81 |
| are vacuum tubes dangerous | 1.74 | 0.9 | 7817 | 83 |
| are vacuum tubes worth anything | 1.22 | 0.9 | 392 | 77 |
| are vacuum tubes still manufactured | 0.96 | 1 | 5781 | 83 |
| are vacuum tubes obsolete | 1.08 | 0.1 | 2865 | 70 |
| are vacuum tubes still used today | 1.69 | 0.8 | 4475 | 51 |
