CSEMP assessment of benzo[a]anthracene in sediment at Forth Estuary
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 65.78 | 68.35 | -29.89 | 59.78 | | | |
| linear | 2 | 67.78 | 73.11 | -29.89 | 59.78 | 0.000 | 1 | 0.9865 |
| smooth (df = 2) | 3 | 67.06 | 77.06 | -28.53 | 57.06 | 2.717 | 1 | 0.0993 |
| smooth (df = 3) | 4 | 68.70 | 86.70 | -28.35 | 56.70 | 0.367 | 1 | 0.5445 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2000 | 2017 | 5.119 | 5.105 | -0.0136 | 0.7918 | -0.017 | 0.9867 |
| last 20 years | 2000 | 2017 | 5.119 | 5.105 | -0.0136 | 0.7918 | -0.017 | 0.9867 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 164.9 | 16.0 | -2.3328 | 0.4820 | -4.840 | 0.9994 |
| ERL | 164.9 | 261.0 | 0.4592 | 0.4820 | 0.953 | 0.1843 |
Raw data with supporting information
![Raw data with supporting information for assessment of benzo[a]anthracene in sediment at Forth Estuary](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/sediment_fr___sdmn_baa_au.jpg "Raw data with supporting information for assessment of benzo[a]anthracene in sediment at Forth Estuary")
Raw data with assessment
![Raw data with assessment of benzo[a]anthracene in sediment at Forth Estuary](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/sediment_fr___sdmn_baa_da.jpg "Raw data with assessment of benzo[a]anthracene in sediment at Forth Estuary")
Assessment plot
![Assessment plot for benzo[a]anthracene in sediment at Forth Estuary](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/sediment_fr___sdmn_baa_as.jpg "Assessment plot for benzo[a]anthracene in sediment at Forth Estuary")
PAH (parent) data
![PAH (parent) data for assessment of benzo[a]anthracene in sediment at Forth Estuary](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/sediment_fr___sdmn_p(p)da.jpg "PAH (parent) data for assessment of benzo[a]anthracene in sediment at Forth Estuary")
PAH (parent) assessment
![PAH (parent) assessment of benzo[a]anthracene in sediment at Forth Estuary](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/sediment_fr___sdmn_p(p)as.jpg "PAH (parent) assessment of benzo[a]anthracene in sediment at Forth Estuary")
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