These describe the sampling technique for collecting measurements.
| Code | Description | Last time modified |
|---|---|---|
| BEST | the best version of the measurements composited from all sources. | 5/12/2003 8:40:03 AM |
| CHRT | values digitized from a paper chart. | 5/12/2003 8:37:09 AM |
| INST | measurements from only 1 instrument. | 5/12/2003 8:37:40 AM |
| INS1 | measurements from instrument number 1. | 5/12/2003 8:38:06 AM |
| INS2 | measurements from instrument number 2. | 5/12/2003 8:38:21 AM |
| INS3 | measurements from instrument number 3. | 5/12/2003 8:38:32 AM |
| PRED | predictions. | 5/12/2003 8:38:40 AM |
| ORIG | original and redundant measurements have been reduced to a single value by averaging or other technique. | 5/12/2003 8:39:55 AM |