CSEMP assessment of lead in biota at Flamborough
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 36.46 | 38.71 | -15.23 | 30.46 | | | |
| linear | 2 | 38.27 | 42.84 | -15.13 | 30.27 | 0.197 | 1 | 0.6576 |
| smooth (df = 2) | 3 | 37.74 | 46.08 | -13.87 | 27.74 | 2.524 | 1 | 0.1121 |
| smooth (df = 3) | 4 | 38.31 | 52.71 | -13.15 | 26.31 | 1.435 | 1 | 0.2310 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2001 | 2017 | 4.857 | 4.794 | -0.06278 | 0.14071 | -0.446 | 0.6660 |
| last 20 years | 2001 | 2017 | 4.857 | 4.794 | -0.06278 | 0.14071 | -0.446 | 0.6660 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 120.8 | 26.0 | -1.5357 | 0.0885 | -17.351 | 1.0000 |
| EC | 120.8 | 1500.0 | 2.5194 | 0.0885 | 28.464 | <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
