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 | 97.29 | 99.29 | -45.64 | 91.29 | | | |
| linear | 2 | 91.10 | 95.10 | -41.55 | 83.10 | 8.187 | 1 | 0.0042 |
| smooth (df = 2) | 3 | 91.94 | 99.09 | -40.97 | 81.94 | 1.159 | 1 | 0.2818 |
| smooth (df = 3) | 4 | 93.63 | 105.63 | -40.82 | 81.63 | 0.312 | 1 | 0.5762 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 1999 | 2018 | 5.421 | 4.081 | -1.3396 | 0.3928 | -3.410 | 0.0067 |
| last 20 years | 1999 | 2018 | 5.421 | 4.081 | -1.3396 | 0.3928 | -3.410 | 0.0067 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 59.2 | 30.0 | -0.6799 | 0.2577 | -2.639 | 0.9876 |
| ERL | 59.2 | 430.0 | 1.9827 | 0.2577 | 7.695 | <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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