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 | 85.23 | 87.48 | -39.61 | 79.23 | | | |
| linear | 2 | 83.02 | 87.60 | -37.51 | 75.02 | 4.203 | 1 | 0.0404 |
| smooth (df = 2) | 3 | 83.94 | 92.27 | -36.97 | 73.94 | 1.087 | 1 | 0.2972 |
| smooth (df = 3) | 4 | 85.94 | 100.34 | -36.97 | 73.94 | 0.001 | 1 | 0.9765 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 1999 | 2016 | 5.281 | 4.268 | -1.0129 | 0.4493 | -2.255 | 0.0506 |
| last 20 years | 1999 | 2016 | 5.281 | 4.268 | -1.0129 | 0.4493 | -2.255 | 0.0506 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 71.39 | 16.00 | -1.4956 | 0.2971 | -5.033 | 0.9996 |
| ERL | 71.39 | 261.00 | 1.2963 | 0.2971 | 4.363 | 0.0009 |
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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