CSEMP assessment of benzo[g,h,i]perylene in sediment at middle (Firth of Clyde)
Statistical analysis
Trend assessment
Analysis of variance
| Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
|---|---|---|---|---|---|---|---|---|
| mean | 1 | 65.97 | 68.54 | -29.99 | 59.97 | |||
| linear | 2 | 67.96 | 73.30 | -29.98 | 59.96 | 0.005 | 1 | 0.9411 |
| smooth (df = 2) | 3 | 68.38 | 78.38 | -29.19 | 58.38 | 1.581 | 1 | 0.2086 |
| smooth (df = 3) | 4 | 51.01 | 69.01 | -19.51 | 39.01 | 19.373 | 1 | <0.0001 |
Change in log concentration
| Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
|---|---|---|---|---|---|---|---|---|
| overall | 2006 | 2017 | 4.960 | 4.993 | 0.0338 | 0.4460 | 0.076 | 0.9415 |
| last 20 years | 2006 | 2017 | 4.960 | 4.993 | 0.0338 | 0.4460 | 0.076 | 0.9415 |
Status assessment
| Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
|---|---|---|---|---|---|---|
| BAC | 147.44 | 80.00 | -0.6114 | 0.2728 | -2.241 | 0.9723 |
Related pages
- Clean Seas Environment Monitoring Programme (CSEMP) accessment viewer tool
- Assessment methodology for in sediment
- Accessment criteria for in sediment
Media : Sediment (< 63 micron fraction)
Station : Firth_of_Clyde_(middle)_seSF, middle (Firth of Clyde)
Determinand : Benzo[g,h,i]perylene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 27 June 2019
Station : Firth_of_Clyde_(middle)_seSF, middle (Firth of Clyde)
Determinand : Benzo[g,h,i]perylene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 27 June 2019
