| Field | Type | Description | Constraints |
|---|---|---|---|
| CS_SURVEY | string | Year survey was performed. | Minimum length : 6 Maximum length : 6 |
| SQUARE | string | Sampling site code for 1km square. | Minimum length : 6 Maximum length : 6 |
| SITE_ID | integer | Stream site identifier, as count within the 1km square. | Minimum : 1 Minimum length : 1 |
| SAMPLE_DATE | date (DD-MMM-YY) | Date sample was taken. | Minimum length : 9 Maximum length : 9 |
| DETERMINAND_NAME | string | The chemical determinand measured. | |
| DETERMINAND_UNITS | string | Units of the measured determinands. | |
| VALUE | number | The measured value of the determinand. | Minimum : 0 |
| LC07 | string | Land class 2007, as determined by Bunce, R.G.H.; Barr, C.J.; Clarke, R.T.; Howard, D.C.; Scott, W.A. (2007). ITE Land Classification of Great Britain 2007. NERC Environmental Information Data Centre. doi:10.5285/5f0605e4-aa2a-48ab-b47c-bf5510823e8f | Minimum length : 2 Maximum length : 4 |
