CSEMP assessment of copper in biota at Conwy Sands (Conwy Bay)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 19.54 | 28.54 | -6.77 | 13.54 | | | |
| linear | 2 | 19.42 | 51.42 | -5.71 | 11.42 | 2.117 | 1 | 0.1457 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2012 | 2018 | 7.294 | 6.893 | -0.4008 | 0.2658 | -1.508 | 0.2287 |
| last 20 years | 2012 | 2018 | 7.294 | 6.893 | -0.4008 | 0.2658 | -1.508 | 0.2287 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 985.6 | 978.0 | -0.00776 | 0.18348 | -0.042 | 0.5155 |
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 biota
- Accessment criteria for metals in biota
