CSEMP assessment of chromium 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 | 42.22 | 44.47 | -18.11 | 36.22 | | | |
| linear | 2 | 44.08 | 48.65 | -18.04 | 36.08 | 0.144 | 1 | 0.7040 |
| smooth (df = 2) | 3 | 43.14 | 51.47 | -16.57 | 33.14 | 2.937 | 1 | 0.0866 |
| smooth (df = 3) | 4 | 44.91 | 59.31 | -16.45 | 32.91 | 0.235 | 1 | 0.6280 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2006 | 2016 | 4.298 | 4.359 | 0.06074 | 0.15861 | 0.383 | 0.7106 |
| last 20 years | 2006 | 2016 | 4.298 | 4.359 | 0.06074 | 0.15861 | 0.383 | 0.7106 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| ERL | 78.19 | 81.00 | 0.03531 | 0.09254 | 0.382 | 0.3558 |
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
