CSEMP assessment of chromium in sediment at middle (Firth of Clyde)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 12.93 | 15.50 | -3.46 | 6.93 | | | |
| linear | 2 | 13.13 | 18.46 | -2.56 | 5.13 | 1.803 | 1 | 0.1793 |
| smooth (df = 2) | 3 | 13.57 | 23.57 | -1.78 | 3.57 | 1.559 | 1 | 0.2119 |
| smooth (df = 3) | 4 | 14.86 | 32.86 | -1.43 | 2.86 | 0.702 | 1 | 0.4021 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2006 | 2016 | 4.446 | 4.235 | -0.21174 | 0.14475 | -1.463 | 0.1817 |
| last 20 years | 2006 | 2016 | 4.446 | 4.235 | -0.21174 | 0.14475 | -1.463 | 0.1817 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| ERL | 69.04 | 81.00 | 0.15972 | 0.06897 | 2.316 | 0.0246 |
Raw data with supporting information
__sdmn_cr_au.jpg "Raw data with supporting information for assessment of chromium in sediment at middle (Firth of Clyde)")
Raw data with assessment
__sdmn_cr_da.jpg "Raw data with assessment of chromium in sediment at middle (Firth of Clyde)")
Assessment plot
__sdmn_cr_as.jpg "Assessment plot for chromium in sediment at middle (Firth of Clyde)")
Metals data
__sdmn_mtlsda.jpg "Metals data for assessment of chromium in sediment at middle (Firth of Clyde)")
Metals assessment
__sdmn_mtlsas.jpg "Metals assessment of chromium in sediment at middle (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
