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 | 26.47 | 30.97 | -10.23 | 20.47 | | | |
| linear | 2 | 27.67 | 38.33 | -9.83 | 19.67 | 0.801 | 1 | 0.3706 |
| smooth (df = 2) | 3 | 25.12 | 50.12 | -7.56 | 15.12 | 4.546 | 1 | 0.0330 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2002 | 2018 | 2.1642 | 1.2089 | -0.9553 | 1.0336 | -0.924 | 0.3977 |
| last 20 years | 2002 | 2018 | 2.1642 | 1.2089 | -0.9553 | 1.0336 | -0.924 | 0.3977 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 3.350 | 0.408 | -2.1066 | 0.6099 | -3.454 | 0.9909 |
| EAC | 3.350 | 13.040 | 1.3591 | 0.6099 | 2.229 | 0.0381 |
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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