CSEMP assessment of benzo[a]pyrene in sediment at Skelmorlie (Clyde)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 57.34 | 59.14 | -25.67 | 51.34 | | | |
| linear | 2 | 57.61 | 61.17 | -24.81 | 49.61 | 1.724 | 1 | 0.1892 |
| smooth (df = 2) | 3 | 59.49 | 65.74 | -24.75 | 49.49 | 0.119 | 1 | 0.7302 |
| smooth (df = 3) | 4 | 60.69 | 70.97 | -24.34 | 48.69 | 0.806 | 1 | 0.3692 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2000 | 2013 | 5.828 | 5.371 | -0.4564 | 0.3396 | -1.344 | 0.2060 |
| last 20 years | 2000 | 2013 | 5.828 | 5.371 | -0.4564 | 0.3396 | -1.344 | 0.2060 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 215.2 | 30.0 | -1.9703 | 0.2052 | -9.601 | 1.0000 |
| ERL | 215.2 | 430.0 | 0.6923 | 0.2052 | 3.374 | 0.0031 |
Raw data with supporting information
![Raw data with supporting information for assessment of benzo[a]pyrene in sediment at Skelmorlie (Clyde)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/sediment_clyd_f_02_sdmn_bap_au.jpg "Raw data with supporting information for assessment of benzo[a]pyrene in sediment at Skelmorlie (Clyde)")
Raw data with assessment
![Raw data with assessment of benzo[a]pyrene in sediment at Skelmorlie (Clyde)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/sediment_clyd_f_02_sdmn_bap_da.jpg "Raw data with assessment of benzo[a]pyrene in sediment at Skelmorlie (Clyde)")
Assessment plot
![Assessment plot for benzo[a]pyrene in sediment at Skelmorlie (Clyde)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/sediment_clyd_f_02_sdmn_bap_as.jpg "Assessment plot for benzo[a]pyrene in sediment at Skelmorlie (Clyde)")
PAH (parent) data
![PAH (parent) data for assessment of benzo[a]pyrene in sediment at Skelmorlie (Clyde)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/sediment_clyd_f_02_sdmn_p(p)da.jpg "PAH (parent) data for assessment of benzo[a]pyrene in sediment at Skelmorlie (Clyde)")
PAH (parent) assessment
![PAH (parent) assessment of benzo[a]pyrene in sediment at Skelmorlie (Clyde)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/sediment_clyd_f_02_sdmn_p(p)as.jpg "PAH (parent) assessment of benzo[a]pyrene in sediment at Skelmorlie (Clyde)")
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