CSEMP assessment of benzo[a]anthracene in sediment at Hunterston (Clyde)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 154.39 | 155.59 | -74.19 | 148.39 | | | |
| linear | 2 | 156.29 | 158.58 | -74.15 | 148.29 | 0.098 | 1 | 0.7537 |
| smooth (df = 2) | 3 | 158.00 | 161.84 | -74.00 | 148.00 | 0.296 | 1 | 0.5865 |
| smooth (df = 3) | 4 | 157.23 | 163.23 | -72.62 | 145.23 | 2.764 | 1 | 0.0964 |
| smooth (df = 4) | 5 | 156.41 | 165.32 | -71.20 | 142.41 | 2.822 | 1 | 0.0930 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2000 | 2018 | 4.810 | 4.903 | 0.09279 | 0.29564 | 0.314 | 0.7577 |
| last 20 years | 2000 | 2018 | 4.810 | 4.903 | 0.09279 | 0.29564 | 0.314 | 0.7577 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 134.65 | 16.00 | -2.1301 | 0.1567 | -13.591 | 1.0000 |
| ERL | 134.65 | 261.00 | 0.6618 | 0.1567 | 4.223 | 0.0003 |
Raw data with supporting information
![Raw data with supporting information for assessment of benzo[a]anthracene in sediment at Hunterston (Clyde)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/sediment_c_()_sdmn_baa_au.jpg "Raw data with supporting information for assessment of benzo[a]anthracene in sediment at Hunterston (Clyde)")
Raw data with assessment
![Raw data with assessment of benzo[a]anthracene in sediment at Hunterston (Clyde)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/sediment_c_()_sdmn_baa_da.jpg "Raw data with assessment of benzo[a]anthracene in sediment at Hunterston (Clyde)")
Assessment plot
![Assessment plot for benzo[a]anthracene in sediment at Hunterston (Clyde)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/sediment_c_()_sdmn_baa_as.jpg "Assessment plot for benzo[a]anthracene in sediment at Hunterston (Clyde)")
PAH (parent) data
![PAH (parent) data for assessment of benzo[a]anthracene in sediment at Hunterston (Clyde)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/sediment_c_()_sdmn_p(p)da.jpg "PAH (parent) data for assessment of benzo[a]anthracene in sediment at Hunterston (Clyde)")
PAH (parent) assessment
![PAH (parent) assessment of benzo[a]anthracene in sediment at Hunterston (Clyde)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/sediment_c_()_sdmn_p(p)as.jpg "PAH (parent) assessment of benzo[a]anthracene in sediment at Hunterston (Clyde)")
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