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 | 25.96 | 30.46 | -9.98 | 19.96 | | | |
| linear | 2 | 27.63 | 38.29 | -9.81 | 19.63 | 0.338 | 1 | 0.5608 |
| smooth (df = 2) | 3 | 26.26 | 51.26 | -8.13 | 16.26 | 3.371 | 1 | 0.0664 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2002 | 2018 | 2.1446 | 1.4913 | -0.6533 | 1.1071 | -0.590 | 0.5808 |
| last 20 years | 2002 | 2018 | 2.1446 | 1.4913 | -0.6533 | 1.1071 | -0.590 | 0.5808 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 4.44 | 0.23 | -2.9688 | 0.6319 | -4.698 | 0.9973 |
| EAC | 4.44 | 97.80 | 3.0916 | 0.6319 | 4.892 | 0.0023 |
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)")
Related pages
