CSEMP assessment of benzo[a]anthracene in sediment at middle (Firth of Clyde)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 55.98 | 58.23 | -24.99 | 49.98 | | | |
| linear | 2 | 56.69 | 61.26 | -24.35 | 48.69 | 1.292 | 1 | 0.2556 |
| smooth (df = 2) | 3 | 58.43 | 66.76 | -24.21 | 48.43 | 0.265 | 1 | 0.6070 |
| smooth (df = 3) | 4 | 49.41 | 63.81 | -18.71 | 37.41 | 11.012 | 1 | 0.0009 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2006 | 2018 | 4.370 | 4.114 | -0.25620 | 0.20517 | -1.249 | 0.2433 |
| last 20 years | 2006 | 2018 | 4.370 | 4.114 | -0.25620 | 0.20517 | -1.249 | 0.2433 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 61.16 | 16.00 | -1.3409 | 0.1233 | -10.871 | 1.0000 |
| ERL | 61.16 | 261.00 | 1.4510 | 0.1233 | 11.764 | <0.0001 |
Raw data with supporting information
![Raw data with supporting information for assessment of benzo[a]anthracene in sediment at middle (Firth of Clyde)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/sediment_frth_f_clyd_(m)__sdmn_baa_au.jpg "Raw data with supporting information for assessment of benzo[a]anthracene in sediment at middle (Firth of Clyde)")
Raw data with assessment
![Raw data with assessment of benzo[a]anthracene in sediment at middle (Firth of Clyde)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/sediment_frth_f_clyd_(m)__sdmn_baa_da.jpg "Raw data with assessment of benzo[a]anthracene in sediment at middle (Firth of Clyde)")
Assessment plot
![Assessment plot for benzo[a]anthracene in sediment at middle (Firth of Clyde)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/sediment_frth_f_clyd_(m)__sdmn_baa_as.jpg "Assessment plot for benzo[a]anthracene in sediment at middle (Firth of Clyde)")
PAH (parent) data
![PAH (parent) data for assessment of benzo[a]anthracene in sediment at middle (Firth of Clyde)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/sediment_frth_f_clyd_(m)__sdmn_p(p)da.jpg "PAH (parent) data for assessment of benzo[a]anthracene in sediment at middle (Firth of Clyde)")
PAH (parent) assessment
![PAH (parent) assessment of benzo[a]anthracene in sediment at middle (Firth of Clyde)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/sediment_frth_f_clyd_(m)__sdmn_p(p)as.jpg "PAH (parent) assessment of benzo[a]anthracene in sediment at middle (Firth of Clyde)")
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