CSEMP assessment of benzo[a]pyrene 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 | 119.42 | 120.70 | -56.71 | 113.42 | | | |
| linear | 2 | 115.07 | 117.53 | -53.53 | 107.07 | 6.350 | 1 | 0.0117 |
| smooth (df = 2) | 3 | 104.72 | 108.89 | -47.36 | 94.72 | 12.344 | 1 | 0.0004 |
| smooth (df = 3) | 4 | 106.50 | 113.04 | -47.25 | 94.50 | 0.226 | 1 | 0.6348 |
| smooth (df = 4) | 5 | 107.36 | 117.16 | -46.68 | 93.36 | 1.141 | 1 | 0.2854 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2000 | 2017 | 4.814 | 4.094 | -0.7202 | 0.1973 | -3.650 | 0.0026 |
| last 20 years | 2000 | 2017 | 4.814 | 4.094 | -0.7202 | 0.1973 | -3.650 | 0.0026 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 60 | 30 | -0.6926 | 0.1653 | -4.191 | 0.9995 |
| ERL | 60 | 430 | 1.9699 | 0.1653 | 11.919 | <0.0001 |
Raw data with supporting information
![Raw data with supporting information for assessment of benzo[a]pyrene 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_bap_au.jpg "Raw data with supporting information for assessment of benzo[a]pyrene in sediment at outer (Firth of Clyde)")
Raw data with assessment
![Raw data with assessment of benzo[a]pyrene 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_bap_da.jpg "Raw data with assessment of benzo[a]pyrene in sediment at outer (Firth of Clyde)")
Assessment plot
![Assessment plot for benzo[a]pyrene 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_bap_as.jpg "Assessment plot for benzo[a]pyrene in sediment at outer (Firth of Clyde)")
PAH (parent) data
![PAH (parent) data for assessment of benzo[a]pyrene 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]pyrene in sediment at outer (Firth of Clyde)")
PAH (parent) assessment
![PAH (parent) assessment of benzo[a]pyrene 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]pyrene in sediment at outer (Firth of Clyde)")
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