| Value | Category | Cases | |
|---|---|---|---|
| 1 | Low iron: < 0.3 mg/L | 1311 |
47.2%
|
| 2 | Moderate iron: 0.3 to 1.0 mg/L | 1323 |
47.6%
|
| 3 | High iron: > 1.0 mg/L | 144 |
5.2%
|
| Sysmiss | 1910 |