CSEMP assessment of lead in biota at Off Boston (Wash)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 8.80 | 11.05 | -1.40 | 2.80 | | | |
| linear | 2 | 10.13 | 14.70 | -1.07 | 2.13 | 0.667 | 1 | 0.4142 |
| smooth (df = 2) | 3 | 8.23 | 16.56 | 0.89 | -1.77 | 3.904 | 1 | 0.0482 |
| smooth (df = 3) | 4 | 8.39 | 22.79 | 1.80 | -3.61 | 1.832 | 1 | 0.1759 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 1999 | 2017 | 5.809 | 5.542 | -0.2674 | 0.3222 | -0.830 | 0.4280 |
| last 20 years | 1999 | 2017 | 5.809 | 5.542 | -0.2674 | 0.3222 | -0.830 | 0.4280 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 255.1 | 211.9 | -0.1856 | 0.1992 | -0.932 | 0.8121 |
| EC | 255.1 | 1500.0 | 1.7715 | 0.1992 | 8.895 | <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
