| Location地(dì)方(fāng) | Ions/cm3 (Approx) |
| Waterfall瀑布(bù) | 5,000-100,000 |
| Cave洞(dòng)穴 | 5,000-20,000 |
| Forest森(sēn)林(lín) | 1,000-5,000 |
| Countryside鄉(xiāng)村(cūn) | 700-1,500 |
| City Streets街道(dào) | 0-300 |
| Home室内 | 0-100 |

| Location地(dì)方(fāng) | Ions/cm3 (Approx) |
| Waterfall瀑布(bù) | 5,000-100,000 |
| Cave洞(dòng)穴 | 5,000-20,000 |
| Forest森(sēn)林(lín) | 1,000-5,000 |
| Countryside鄉(xiāng)村(cūn) | 700-1,500 |
| City Streets街道(dào) | 0-300 |
| Home室内 | 0-100 |
