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 | 38.40 | 39.68 | -16.20 | 32.40 | | | |
| linear | 2 | 37.67 | 40.14 | -14.84 | 29.67 | 2.723 | 1 | 0.0989 |
| smooth (df = 2) | 3 | 34.67 | 38.84 | -12.33 | 24.67 | 5.005 | 1 | 0.0253 |
| smooth (df = 3) | 4 | 32.35 | 38.90 | -10.18 | 20.35 | 4.318 | 1 | 0.0377 |
| smooth (df = 4) | 5 | 34.02 | 43.82 | -10.01 | 20.02 | 0.331 | 1 | 0.5651 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 1999 | 2016 | 5.144 | 5.353 | 0.20915 | 0.10816 | 1.934 | 0.0736 |
| last 20 years | 1999 | 2016 | 5.144 | 5.353 | 0.20915 | 0.10816 | 1.934 | 0.0736 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 211.29 | 122.00 | -0.5492 | 0.0895 | -6.134 | 1.0000 |
| ERL | 211.29 | 150.00 | -0.3426 | 0.0895 | -3.826 | 0.9991 |
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
