CSEMP assessment of phenanthrene in sediment at inner (Firth of Clyde)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 202.90 | 204.40 | -98.45 | 196.90 | | | |
| linear | 2 | 199.01 | 201.92 | -95.51 | 191.01 | 5.888 | 1 | 0.0152 |
| smooth (df = 2) | 3 | 200.99 | 205.99 | -95.49 | 190.99 | 0.027 | 1 | 0.8697 |
| smooth (df = 3) | 4 | 195.51 | 203.51 | -91.75 | 183.51 | 7.477 | 1 | 0.0062 |
| smooth (df = 4) | 5 | 194.15 | 206.40 | -90.08 | 180.15 | 3.355 | 1 | 0.0670 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2002 | 2017 | 4.772 | 6.143 | 1.3706 | 0.5170 | 2.651 | 0.0200 |
| last 20 years | 2002 | 2017 | 4.772 | 6.143 | 1.3706 | 0.5170 | 2.651 | 0.0200 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 465.5 | 32.0 | -2.6773 | 0.2892 | -9.257 | 1.0000 |
| ERL | 465.5 | 240.0 | -0.6624 | 0.2892 | -2.290 | 0.9803 |
Raw data with supporting information
__sdmn_pa_au.jpg "Raw data with supporting information for assessment of phenanthrene in sediment at inner (Firth of Clyde)")
Raw data with assessment
__sdmn_pa_da.jpg "Raw data with assessment of phenanthrene in sediment at inner (Firth of Clyde)")
Assessment plot
__sdmn_pa_as.jpg "Assessment plot for phenanthrene in sediment at inner (Firth of Clyde)")
PAH (parent) data
__sdmn_p(p)da.jpg "PAH (parent) data for assessment of phenanthrene in sediment at inner (Firth of Clyde)")
PAH (parent) assessment
__sdmn_p(p)as.jpg "PAH (parent) assessment of phenanthrene in sediment at inner (Firth of Clyde)")
Related pages
