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| Criteria for exclusion | Number of samples excluded |
|---|---|
| Duplicates | 107 |
| Outdated data (data sampled before 2011) | 45,595 |
| Reported as suspect samples (not random sampling) | 7,216 |
| LOD/LOQ not reported | 501 |
| Food data eliminated due to application of LOQ cut‐offs | 12,298 |
| Feed data eliminated due to application of LOQ cut‐offs | 552 |
| Total | 66,269 |
LOD: limit of detection; LOQ: limit of quantification.
