CSEMP assessment of lead in biota at NarrowWaterM
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | -2.48 | -0.08 | 3.24 | -6.48 | | | |
| linear | 2 | -2.13 | 3.87 | 4.07 | -8.13 | 1.653 | 1 | 0.1986 |
| smooth (df = 2) | 3 | -1.21 | 12.13 | 4.60 | -9.21 | 1.077 | 1 | 0.2994 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2011 | 2018 | 6.567 | 6.354 | -0.21305 | 0.15723 | -1.355 | 0.2242 |
| last 20 years | 2011 | 2018 | 6.567 | 6.354 | -0.21305 | 0.15723 | -1.355 | 0.2242 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 574.8 | 211.9 | -0.9979 | 0.0940 | -10.619 | 1.0000 |
| EC | 574.8 | 1500.0 | 0.9592 | 0.0940 | 10.208 | <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
