CSEMP assessment of benzo[a]anthracene in sediment at inner (Firth of Forth)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 93.89 | 95.89 | -43.94 | 87.89 | | | |
| linear | 2 | 87.83 | 91.83 | -39.92 | 79.83 | 8.053 | 1 | 0.0045 |
| smooth (df = 2) | 3 | 88.24 | 95.38 | -39.12 | 78.24 | 1.593 | 1 | 0.2069 |
| smooth (df = 3) | 4 | 90.21 | 102.21 | -39.10 | 78.21 | 0.034 | 1 | 0.8543 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 1999 | 2018 | 5.332 | 4.006 | -1.3263 | 0.3928 | -3.377 | 0.0070 |
| last 20 years | 1999 | 2018 | 5.332 | 4.006 | -1.3263 | 0.3928 | -3.377 | 0.0070 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 54.91 | 16.00 | -1.2330 | 0.2588 | -4.764 | 0.9996 |
| ERL | 54.91 | 261.00 | 1.5589 | 0.2588 | 6.024 | <0.0001 |
Raw data with supporting information
![Raw data with supporting information for assessment of benzo[a]anthracene in sediment at inner (Firth of Forth)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/sediment_frth_f_frth_(n)__sdmn_baa_au.jpg "Raw data with supporting information for assessment of benzo[a]anthracene in sediment at inner (Firth of Forth)")
Raw data with assessment
![Raw data with assessment of benzo[a]anthracene in sediment at inner (Firth of Forth)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/sediment_frth_f_frth_(n)__sdmn_baa_da.jpg "Raw data with assessment of benzo[a]anthracene in sediment at inner (Firth of Forth)")
Assessment plot
![Assessment plot for benzo[a]anthracene in sediment at inner (Firth of Forth)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/sediment_frth_f_frth_(n)__sdmn_baa_as.jpg "Assessment plot for benzo[a]anthracene in sediment at inner (Firth of Forth)")
PAH (parent) data
![PAH (parent) data for assessment of benzo[a]anthracene in sediment at inner (Firth of Forth)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/sediment_frth_f_frth_(n)__sdmn_p(p)da.jpg "PAH (parent) data for assessment of benzo[a]anthracene in sediment at inner (Firth of Forth)")
PAH (parent) assessment
![PAH (parent) assessment of benzo[a]anthracene in sediment at inner (Firth of Forth)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/sediment_frth_f_frth_(n)__sdmn_p(p)as.jpg "PAH (parent) assessment of benzo[a]anthracene in sediment at inner (Firth of Forth)")
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