CSEMP assessment of mercury 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 | 69.00 | 71.57 | -31.50 | 63.00 | | | |
| linear | 2 | 70.91 | 76.24 | -31.45 | 62.91 | 0.089 | 1 | 0.7660 |
| smooth (df = 2) | 3 | 72.69 | 82.69 | -31.35 | 62.69 | 0.214 | 1 | 0.6439 |
| smooth (df = 3) | 4 | 74.68 | 92.68 | -31.34 | 62.68 | 0.012 | 1 | 0.9142 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2006 | 2016 | -3.146 | -3.220 | -0.07385 | 0.24549 | -0.301 | 0.7712 |
| last 20 years | 2006 | 2016 | -3.146 | -3.220 | -0.07385 | 0.24549 | -0.301 | 0.7712 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.03994 | 0.07000 | 0.5610 | 0.1460 | 3.843 | 0.0025 |
| ERL | 0.03994 | 0.15000 | 1.3232 | 0.1460 | 9.065 | <0.0001 |
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
