CSEMP assessment of c2 phenanthrenes in sediment at outer (Firth of Clyde)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 95.65 | 97.03 | -44.82 | 89.65 | | | |
| linear | 2 | 88.61 | 91.28 | -40.31 | 80.61 | 9.037 | 1 | 0.0026 |
| smooth (df = 2) | 3 | 75.88 | 80.43 | -32.94 | 65.88 | 14.732 | 1 | 0.0001 |
| smooth (df = 3) | 4 | 77.69 | 84.89 | -32.84 | 65.69 | 0.192 | 1 | 0.6614 |
| smooth (df = 4) | 5 | 78.21 | 89.10 | -32.10 | 64.21 | 1.482 | 1 | 0.2235 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2000 | 2017 | 5.325 | 4.476 | -0.8482 | 0.1658 | -5.116 | 0.0002 |
| last 20 years | 2000 | 2017 | 5.325 | 4.476 | -0.8482 | 0.1658 | -5.116 | 0.0002 |
Status assessment
No assessment criteria
Raw data with supporting information
__sdmn_pac2_au.jpg "Raw data with supporting information for assessment of c2 phenanthrenes in sediment at outer (Firth of Clyde)")
Raw data with assessment
__sdmn_pac2_da.jpg "Raw data with assessment of c2 phenanthrenes in sediment at outer (Firth of Clyde)")
Assessment plot
__sdmn_pac2_as.jpg "Assessment plot for c2 phenanthrenes in sediment at outer (Firth of Clyde)")
PAH (alkylated) data
__sdmn_p(l)da.jpg "PAH (alkylated) data for assessment of c2 phenanthrenes in sediment at outer (Firth of Clyde)")
PAH (alkylated) assessment
__sdmn_p(l)as.jpg "PAH (alkylated) assessment of c2 phenanthrenes in sediment at outer (Firth of Clyde)")
Related pages
