CSEMP assessment of phenanthrene 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 | 27.37 | 30.97 | -10.69 | 21.37 | |||
linear | 2 | 28.90 | 36.90 | -10.45 | 20.90 | 0.476 | 1 | 0.4903 |
smooth (df = 2) | 3 | 30.36 | 47.02 | -10.18 | 20.36 | 0.538 | 1 | 0.4634 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2003 | 2018 | 1.7025 | 1.3365 | -0.3660 | 0.5157 | -0.710 | 0.5045 |
last 20 years | 2003 | 2018 | 1.7025 | 1.3365 | -0.3660 | 0.5157 | -0.710 | 0.5045 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 3.81 | 1.79 | -0.753 | 0.322 | -2.335 | 0.9709 |
EAC | 3.81 | 277.10 | 4.288 | 0.322 | 13.305 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
PAH (parent) data
PAH (parent) assessment
Related pages
- Clean Seas Environment Monitoring Programme (CSEMP) accessment viewer tool
- Assessment methodology for pah_(parent) in biota
- Accessment criteria for pah_(parent) in biota
Media : Biota (Blue mussel soft body)
Station : HumWash_Witham_sh01, Off Boston (Wash)
Determinand : Phenanthrene
Units : μg kg-1 wet weight
Data extraction : 30 April 2020
Station : HumWash_Witham_sh01, Off Boston (Wash)
Determinand : Phenanthrene
Units : μg kg-1 wet weight
Data extraction : 30 April 2020