CSEMP assessment of benzo[a]anthracene in biota at Crosby (Mersey Channel)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 26.23 | 32.23 | -10.11 | 20.23 | | | |
| linear | 2 | 27.42 | 43.42 | -9.71 | 19.42 | 0.802 | 1 | 0.3704 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2002 | 2017 | 2.1980 | 1.1156 | -1.0824 | 1.1680 | -0.927 | 0.4065 |
| last 20 years | 2002 | 2017 | 2.1980 | 1.1156 | -1.0824 | 1.1680 | -0.927 | 0.4065 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 3.051 | 0.408 | -2.0133 | 0.7265 | -2.771 | 0.9749 |
| EAC | 3.051 | 13.040 | 1.4524 | 0.7265 | 1.999 | 0.0581 |
Raw data with supporting information
![Raw data with supporting information for assessment of benzo[a]anthracene in biota at Crosby (Mersey Channel)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/shellfish_irshs_lv_01_blms_baa_au.jpg "Raw data with supporting information for assessment of benzo[a]anthracene in biota at Crosby (Mersey Channel)")
Raw data with assessment
![Raw data with assessment of benzo[a]anthracene in biota at Crosby (Mersey Channel)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/shellfish_irshs_lv_01_blms_baa_da.jpg "Raw data with assessment of benzo[a]anthracene in biota at Crosby (Mersey Channel)")
Assessment plot
![Assessment plot for benzo[a]anthracene in biota at Crosby (Mersey Channel)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/shellfish_irshs_lv_01_blms_baa_as.jpg "Assessment plot for benzo[a]anthracene in biota at Crosby (Mersey Channel)")
PAH (parent) data
![PAH (parent) data for assessment of benzo[a]anthracene in biota at Crosby (Mersey Channel)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/shellfish_irshs_lv_01_blms_p(p)da.jpg "PAH (parent) data for assessment of benzo[a]anthracene in biota at Crosby (Mersey Channel)")
PAH (parent) assessment
![PAH (parent) assessment of benzo[a]anthracene in biota at Crosby (Mersey Channel)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/shellfish_irshs_lv_01_blms_p(p)as.jpg "PAH (parent) assessment of benzo[a]anthracene in biota at Crosby (Mersey Channel)")
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