CSEMP assessment of nickel 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 | 0.27 | 9.27 | 2.87 | -5.73 | | | |
| linear | 2 | -0.41 | 31.59 | 4.20 | -8.41 | 2.676 | 1 | 0.1019 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2010 | 2017 | 3.924 | 3.658 | -0.26624 | 0.15077 | -1.766 | 0.1756 |
| last 20 years | 2010 | 2017 | 3.924 | 3.658 | -0.26624 | 0.15077 | -1.766 | 0.1756 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 38.78 | 36.00 | -0.07434 | 0.06610 | -1.125 | 0.8287 |
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
