CSEMP assessment of benzo[a]anthracene 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 | 55.73 | 60.23 | -24.87 | 49.73 | | | |
| linear | 2 | 52.06 | 62.72 | -22.03 | 44.06 | 5.675 | 1 | 0.0172 |
| smooth (df = 2) | 3 | 50.32 | 75.32 | -20.16 | 40.32 | 3.732 | 1 | 0.0534 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2003 | 2015 | 0.8790 | -0.6293 | -1.5083 | 0.5129 | -2.941 | 0.0322 |
| last 20 years | 2003 | 2015 | 0.8790 | -0.6293 | -1.5083 | 0.5129 | -2.941 | 0.0322 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.533 | 0.408 | -0.268 | 0.333 | -0.806 | 0.7717 |
| EAC | 0.533 | 13.040 | 3.197 | 0.333 | 9.608 | 0.0001 |
Raw data with supporting information
![Raw data with supporting information for assessment of benzo[a]anthracene in biota at Mostyn Bank (Dee)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/shellfish_irshs_dnw_01_blms_baa_au.jpg "Raw data with supporting information for assessment of benzo[a]anthracene in biota at Mostyn Bank (Dee)")
Raw data with assessment
![Raw data with assessment of benzo[a]anthracene in biota at Mostyn Bank (Dee)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/shellfish_irshs_dnw_01_blms_baa_da.jpg "Raw data with assessment of benzo[a]anthracene in biota at Mostyn Bank (Dee)")
Assessment plot
![Assessment plot for benzo[a]anthracene in biota at Mostyn Bank (Dee)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/shellfish_irshs_dnw_01_blms_baa_as.jpg "Assessment plot for benzo[a]anthracene in biota at Mostyn Bank (Dee)")
PAH (parent) data
![PAH (parent) data for assessment of benzo[a]anthracene in biota at Mostyn Bank (Dee)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/shellfish_irshs_dnw_01_blms_p(p)da.jpg "PAH (parent) data for assessment of benzo[a]anthracene in biota at Mostyn Bank (Dee)")
PAH (parent) assessment
![PAH (parent) assessment of benzo[a]anthracene in biota at Mostyn Bank (Dee)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/shellfish_irshs_dnw_01_blms_p(p)as.jpg "PAH (parent) assessment of benzo[a]anthracene in biota at Mostyn Bank (Dee)")
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