CSEMP assessment of zinc in sediment at outer (Firth of Clyde)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 16.55 | 17.84 | -5.28 | 10.55 | | | |
| linear | 2 | 10.73 | 13.19 | -1.36 | 2.73 | 7.824 | 1 | 0.0052 |
| smooth (df = 2) | 3 | -5.44 | -1.28 | 7.72 | -15.44 | 18.174 | 1 | <0.0001 |
| smooth (df = 3) | 4 | -3.97 | 2.57 | 7.99 | -15.97 | 0.529 | 1 | 0.4668 |
| smooth (df = 4) | 5 | -3.22 | 6.58 | 8.61 | -17.22 | 1.242 | 1 | 0.2651 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2000 | 2017 | 5.688 | 4.866 | -0.8222 | 0.1474 | -5.577 | <0.0001 |
| last 20 years | 2000 | 2017 | 5.688 | 4.866 | -0.8222 | 0.1474 | -5.577 | <0.0001 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 129.8 | 122.0 | -0.06199 | 0.11532 | -0.538 | 0.7003 |
| ERL | 129.8 | 150.0 | 0.14462 | 0.11532 | 1.254 | 0.1152 |
Raw data with supporting information
__sdmn_zn_au.jpg "Raw data with supporting information for assessment of zinc in sediment at outer (Firth of Clyde)")
Raw data with assessment
__sdmn_zn_da.jpg "Raw data with assessment of zinc in sediment at outer (Firth of Clyde)")
Assessment plot
__sdmn_zn_as.jpg "Assessment plot for zinc in sediment at outer (Firth of Clyde)")
Metals data
__sdmn_mtlsda.jpg "Metals data for assessment of zinc in sediment at outer (Firth of Clyde)")
Metals assessment
__sdmn_mtlsas.jpg "Metals assessment of zinc in sediment at outer (Firth of Clyde)")
Related pages
- Clean Seas Environment Monitoring Programme (CSEMP) accessment viewer tool
- Assessment methodology for metals in sediment
- Accessment criteria for metals in sediment
