CSEMP assessment of nickel in sediment at North Minch
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | -2.39 | -0.39 | 4.20 | -8.39 | | | |
| linear | 2 | -1.36 | 2.64 | 4.68 | -9.36 | 0.966 | 1 | 0.3258 |
| smooth (df = 2) | 3 | 0.43 | 7.57 | 4.79 | -9.57 | 0.216 | 1 | 0.6420 |
| smooth (df = 3) | 4 | -5.23 | 6.77 | 8.62 | -17.23 | 7.659 | 1 | 0.0056 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2004 | 2016 | 3.697 | 3.525 | -0.17162 | 0.16889 | -1.016 | 0.3335 |
| last 20 years | 2004 | 2016 | 3.697 | 3.525 | -0.17162 | 0.16889 | -1.016 | 0.3335 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 33.97 | 36.00 | 0.05817 | 0.11421 | 0.509 | 0.3108 |
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
