CSEMP assessment of zinc in sediment at inner (Firth of Clyde)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 38.99 | 40.19 | -16.50 | 32.99 | | | |
| linear | 2 | 38.00 | 40.28 | -15.00 | 30.00 | 2.996 | 1 | 0.0835 |
| smooth (df = 2) | 3 | 35.18 | 39.03 | -12.59 | 25.18 | 4.817 | 1 | 0.0282 |
| smooth (df = 3) | 4 | 35.31 | 41.31 | -11.65 | 23.31 | 1.872 | 1 | 0.1712 |
| smooth (df = 4) | 5 | 37.05 | 45.96 | -11.52 | 23.05 | 0.259 | 1 | 0.6105 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 1999 | 2017 | 5.157 | 5.361 | 0.20425 | 0.10557 | 1.935 | 0.0721 |
| last 20 years | 1999 | 2017 | 5.157 | 5.361 | 0.20425 | 0.10557 | 1.935 | 0.0721 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 212.97 | 122.00 | -0.5571 | 0.0886 | -6.287 | 1.0000 |
| ERL | 212.97 | 150.00 | -0.3505 | 0.0886 | -3.955 | 0.9994 |
Raw data with supporting information
__sdmn_zn_au.jpg "Raw data with supporting information for assessment of zinc in sediment at inner (Firth of Clyde)")
Raw data with assessment
__sdmn_zn_da.jpg "Raw data with assessment of zinc in sediment at inner (Firth of Clyde)")
Assessment plot
__sdmn_zn_as.jpg "Assessment plot for zinc in sediment at inner (Firth of Clyde)")
Metals data
__sdmn_mtlsda.jpg "Metals data for assessment of zinc in sediment at inner (Firth of Clyde)")
Metals assessment
__sdmn_mtlsas.jpg "Metals assessment of zinc in sediment at inner (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
