CSEMP assessment of phenanthrene in biota at Mostyn Bank (Dee)
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 56.00 | 60.50 | -25.00 | 50.00 | |||
linear | 2 | 57.51 | 68.18 | -24.76 | 49.51 | 0.486 | 1 | 0.4855 |
smooth (df = 2) | 3 | 53.08 | 78.08 | -21.54 | 43.08 | 6.427 | 1 | 0.0112 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 1999 | 2018 | 1.2305 | 0.2417 | -0.9889 | 1.3915 | -0.711 | 0.5091 |
last 20 years | 1999 | 2018 | 1.2305 | 0.2417 | -0.9889 | 1.3915 | -0.711 | 0.5091 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 1.27 | 1.79 | 0.342 | 0.865 | 0.395 | 0.3544 |
EAC | 1.27 | 277.10 | 5.383 | 0.865 | 6.220 | 0.0008 |
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 : IrishSea_DeeNWales_sh01, Mostyn Bank (Dee)
Determinand : Phenanthrene
Units : μg kg-1 wet weight
Data extraction : 30 April 2020
Station : IrishSea_DeeNWales_sh01, Mostyn Bank (Dee)
Determinand : Phenanthrene
Units : μg kg-1 wet weight
Data extraction : 30 April 2020