CSEMP assessment of mercury 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 | -10.77 | -1.77 | 8.39 | -16.77 | | | |
| linear | 2 | -8.78 | 23.22 | 8.39 | -16.78 | 0.013 | 1 | 0.9108 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2012 | 2018 | 3.234 | 3.210 | -0.02376 | 0.21164 | -0.112 | 0.9177 |
| last 20 years | 2012 | 2018 | 3.234 | 3.210 | -0.02376 | 0.21164 | -0.112 | 0.9177 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 24.8 | 14.7 | -0.5242 | 0.1458 | -3.595 | 0.9815 |
| EC | 24.8 | 500.0 | 3.0046 | 0.1458 | 20.603 | 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 biota
- Accessment criteria for metals in biota
