Ca2+
Mg2+
Household
0.12
0.92
0.47
Stairs
0.13
0.91
0.49
Entryway
0.15
0.95
0.53
|
| Ca2+ | Mg2+ | |
| Household | 0.12 | 0.92 | 0.47 |
| Stairs | 0.13 | 0.91 | 0.49 |
| Entryway | 0.15 | 0.95 | 0.53 |