CSEMP assessment of chromium 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 | 6.84 | 8.13 | -0.42 | 0.84 | | | |
| linear | 2 | 5.70 | 8.17 | 1.15 | -2.30 | 3.140 | 1 | 0.0764 |
| smooth (df = 2) | 3 | 6.29 | 10.46 | 1.85 | -3.71 | 1.413 | 1 | 0.2346 |
| smooth (df = 3) | 4 | 8.28 | 14.82 | 1.86 | -3.72 | 0.013 | 1 | 0.9096 |
| smooth (df = 4) | 5 | 6.41 | 16.21 | 3.79 | -7.59 | 3.868 | 1 | 0.0492 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 1999 | 2016 | 5.020 | 4.784 | -0.23620 | 0.12839 | -1.840 | 0.0857 |
| last 20 years | 1999 | 2016 | 5.020 | 4.784 | -0.23620 | 0.12839 | -1.840 | 0.0857 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| ERL | 119.6 | 81.0 | -0.3897 | 0.0755 | -5.160 | 0.9999 |
Raw data with supporting information
__sdmn_cr_au.jpg "Raw data with supporting information for assessment of chromium in sediment at inner (Firth of Clyde)")
Raw data with assessment
__sdmn_cr_da.jpg "Raw data with assessment of chromium in sediment at inner (Firth of Clyde)")
Assessment plot
__sdmn_cr_as.jpg "Assessment plot for chromium in sediment at inner (Firth of Clyde)")
Metals data
__sdmn_mtlsda.jpg "Metals data for assessment of chromium in sediment at inner (Firth of Clyde)")
Metals assessment
__sdmn_mtlsas.jpg "Metals assessment of chromium 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
