CSEMP assessment of benzo[a]anthracene in sediment at outer (Firth of Clyde)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 115.19 | 116.47 | -54.59 | 109.19 | | | |
| linear | 2 | 109.48 | 111.94 | -50.74 | 101.48 | 7.707 | 1 | 0.0055 |
| smooth (df = 2) | 3 | 104.05 | 108.22 | -47.03 | 94.05 | 7.424 | 1 | 0.0064 |
| smooth (df = 3) | 4 | 105.88 | 112.43 | -46.94 | 93.88 | 0.173 | 1 | 0.6772 |
| smooth (df = 4) | 5 | 104.17 | 113.97 | -45.08 | 90.17 | 3.713 | 1 | 0.0540 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2000 | 2017 | 4.361 | 3.644 | -0.7171 | 0.1980 | -3.622 | 0.0028 |
| last 20 years | 2000 | 2017 | 4.361 | 3.644 | -0.7171 | 0.1980 | -3.622 | 0.0028 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 38.25 | 16.00 | -0.8715 | 0.1649 | -5.285 | 0.9999 |
| ERL | 38.25 | 261.00 | 1.9204 | 0.1649 | 11.645 | <0.0001 |
Raw data with supporting information
![Raw data with supporting information for assessment of benzo[a]anthracene in sediment at outer (Firth of Clyde)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/sediment_frth_f_clyd_(t)__sdmn_baa_au.jpg "Raw data with supporting information for assessment of benzo[a]anthracene in sediment at outer (Firth of Clyde)")
Raw data with assessment
![Raw data with assessment of benzo[a]anthracene in sediment at outer (Firth of Clyde)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/sediment_frth_f_clyd_(t)__sdmn_baa_da.jpg "Raw data with assessment of benzo[a]anthracene in sediment at outer (Firth of Clyde)")
Assessment plot
![Assessment plot for benzo[a]anthracene in sediment at outer (Firth of Clyde)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/sediment_frth_f_clyd_(t)__sdmn_baa_as.jpg "Assessment plot for benzo[a]anthracene in sediment at outer (Firth of Clyde)")
PAH (parent) data
![PAH (parent) data for assessment of benzo[a]anthracene in sediment at outer (Firth of Clyde)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/sediment_frth_f_clyd_(t)__sdmn_p(p)da.jpg "PAH (parent) data for assessment of benzo[a]anthracene in sediment at outer (Firth of Clyde)")
PAH (parent) assessment
![PAH (parent) assessment of benzo[a]anthracene in sediment at outer (Firth of Clyde)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/sediment_frth_f_clyd_(t)__sdmn_p(p)as.jpg "PAH (parent) assessment of benzo[a]anthracene in sediment at outer (Firth of Clyde)")
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