CSEMP assessment of benzo[a]anthracene in biota at NarrowWaterM
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | -1.91 | 1.09 | 2.95 | -5.91 | |||
linear | 2 | -3.44 | 4.56 | 4.72 | -9.44 | 3.529 | 1 | 0.0603 |
smooth (df = 2) | 3 | -2.98 | 17.02 | 5.49 | -10.98 | 1.542 | 1 | 0.2143 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2011 | 2018 | 2.4551 | 2.1255 | -0.3296 | 0.1594 | -2.067 | 0.0936 |
last 20 years | 2011 | 2018 | 2.4551 | 2.1255 | -0.3296 | 0.1594 | -2.067 | 0.0936 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 8.377 | 0.408 | -3.0232 | 0.1031 | -29.312 | 1.0000 |
EAC | 8.377 | 13.040 | 0.4425 | 0.1031 | 4.291 | 0.0039 |
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_NewryEstuary_sh01 (NarrowWaterM)
Determinand : Benzo[a]anthracene
Units : μg kg-1 wet weight
Data extraction : 30 April 2020
Station : IrishSea_NewryEstuary_sh01 (NarrowWaterM)
Determinand : Benzo[a]anthracene
Units : μg kg-1 wet weight
Data extraction : 30 April 2020