| PVCCODE | NAME | 
|---|---|
| 1C | First Column Result - The Value Obtained from the First Column | 
| 2C | Second Column Result - The Value Obtained from the Second Column | 
| AU | Alternative Unit | 
| MS | GC/MS Result - Value Confirmed Using GC/MS | 
| NR | Not Reported - Data Not Reported | 
| NU | Not Usable - Data Not Usable | 
| PR | Primary Result - The Primary Result for a Parameter | 
| SR | Semi-Quantitative Result |