CSEMP assessment of chromium in sediment at Off Tees
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 1.14 | 10.14 | 2.43 | -4.86 | | | |
| linear | 2 | -0.86 | 31.14 | 4.43 | -8.86 | 4.001 | 1 | 0.0455 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2010 | 2017 | 4.720 | 4.406 | -0.31430 | 0.14548 | -2.160 | 0.1195 |
| last 20 years | 2010 | 2017 | 4.720 | 4.406 | -0.31430 | 0.14548 | -2.160 | 0.1195 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| ERL | 81.92 | 81.00 | -0.01134 | 0.06206 | -0.183 | 0.5667 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Metals data
Metals assessment
Related pages
- Clean Seas Environment Monitoring Programme (CSEMP) accessment viewer tool
- Assessment methodology for metals in sediment
- Accessment criteria for metals in sediment
