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 | 145.93 | 147.21 | -69.96 | 139.93 | | | |
| linear | 2 | 147.80 | 150.26 | -69.90 | 139.80 | 0.129 | 1 | 0.7191 |
| smooth (df = 2) | 3 | 149.36 | 153.53 | -69.68 | 139.36 | 0.435 | 1 | 0.5095 |
| smooth (df = 3) | 4 | 146.64 | 153.19 | -67.32 | 134.64 | 4.722 | 1 | 0.0298 |
| smooth (df = 4) | 5 | 147.42 | 157.22 | -66.71 | 133.42 | 1.216 | 1 | 0.2701 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2000 | 2017 | 4.801 | 4.913 | 0.11211 | 0.31141 | 0.360 | 0.7239 |
| last 20 years | 2000 | 2017 | 4.801 | 4.913 | 0.11211 | 0.31141 | 0.360 | 0.7239 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 136.02 | 16.00 | -2.1402 | 0.1668 | -12.831 | 1.0000 |
| ERL | 136.02 | 261.00 | 0.6517 | 0.1668 | 3.907 | 0.0007 |
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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