CSEMP assessment of benzo[a]pyrene 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 | 26.36 | 32.36 | -10.18 | 20.36 | | | |
| linear | 2 | 28.02 | 44.02 | -10.01 | 20.02 | 0.341 | 1 | 0.5595 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2002 | 2017 | 2.1679 | 1.4218 | -0.7461 | 1.2603 | -0.592 | 0.5857 |
| last 20 years | 2002 | 2017 | 2.1679 | 1.4218 | -0.7461 | 1.2603 | -0.592 | 0.5857 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 4.14 | 0.23 | -2.8993 | 0.7559 | -3.835 | 0.9907 |
| EAC | 4.14 | 97.80 | 3.1611 | 0.7559 | 4.182 | 0.0069 |
Raw data with supporting information
![Raw data with supporting information for assessment of benzo[a]pyrene in biota at Crosby (Mersey Channel)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/shellfish_irshs_lv_01_blms_bap_au.jpg "Raw data with supporting information for assessment of benzo[a]pyrene in biota at Crosby (Mersey Channel)")
Raw data with assessment
![Raw data with assessment of benzo[a]pyrene in biota at Crosby (Mersey Channel)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/shellfish_irshs_lv_01_blms_bap_da.jpg "Raw data with assessment of benzo[a]pyrene in biota at Crosby (Mersey Channel)")
Assessment plot
![Assessment plot for benzo[a]pyrene in biota at Crosby (Mersey Channel)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/shellfish_irshs_lv_01_blms_bap_as.jpg "Assessment plot for benzo[a]pyrene in biota at Crosby (Mersey Channel)")
PAH (parent) data
![PAH (parent) data for assessment of benzo[a]pyrene 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]pyrene in biota at Crosby (Mersey Channel)")
PAH (parent) assessment
![PAH (parent) assessment of benzo[a]pyrene 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]pyrene in biota at Crosby (Mersey Channel)")
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