CSEMP assessment of lead in biota at Cork Hole (Wash)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 0.32 | 4.82 | 2.84 | -5.68 | | | |
| linear | 2 | -2.51 | 8.15 | 5.26 | -10.51 | 4.831 | 1 | 0.0280 |
| smooth (df = 2) | 3 | -4.56 | 20.44 | 7.28 | -14.56 | 4.049 | 1 | 0.0442 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 1999 | 2015 | 6.003 | 5.617 | -0.3854 | 0.1266 | -3.044 | 0.0286 |
| last 20 years | 1999 | 2015 | 6.003 | 5.617 | -0.3854 | 0.1266 | -3.044 | 0.0286 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 275.1 | 211.9 | -0.2611 | 0.0773 | -3.380 | 0.9902 |
| EC | 275.1 | 1500.0 | 1.6960 | 0.0773 | 21.954 | <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
