CSEMP assessment of benzo[a]pyrene 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 | 89.92 | 92.17 | -41.96 | 83.92 | | | |
| linear | 2 | 87.17 | 91.74 | -39.58 | 79.17 | 4.754 | 1 | 0.0292 |
| smooth (df = 2) | 3 | 88.02 | 96.35 | -39.01 | 78.02 | 1.149 | 1 | 0.2837 |
| smooth (df = 3) | 4 | 89.91 | 104.31 | -38.96 | 77.91 | 0.107 | 1 | 0.7439 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 1999 | 2016 | 5.394 | 4.286 | -1.1083 | 0.4571 | -2.424 | 0.0383 |
| last 20 years | 1999 | 2016 | 5.394 | 4.286 | -1.1083 | 0.4571 | -2.424 | 0.0383 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 72.7 | 30.0 | -0.8850 | 0.3015 | -2.936 | 0.9917 |
| ERL | 72.7 | 430.0 | 1.7776 | 0.3015 | 5.896 | 0.0001 |
Raw data with supporting information
![Raw data with supporting information for assessment of benzo[a]pyrene 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_bap_au.jpg "Raw data with supporting information for assessment of benzo[a]pyrene in sediment at inner (Firth of Forth)")
Raw data with assessment
![Raw data with assessment of benzo[a]pyrene 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_bap_da.jpg "Raw data with assessment of benzo[a]pyrene in sediment at inner (Firth of Forth)")
Assessment plot
![Assessment plot for benzo[a]pyrene 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_bap_as.jpg "Assessment plot for benzo[a]pyrene in sediment at inner (Firth of Forth)")
PAH (parent) data
![PAH (parent) data for assessment of benzo[a]pyrene 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]pyrene in sediment at inner (Firth of Forth)")
PAH (parent) assessment
![PAH (parent) assessment of benzo[a]pyrene 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]pyrene in sediment at inner (Firth of Forth)")
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