CSEMP assessment of c1 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 | 96.80 | 98.18 | -45.40 | 90.80 | | | |
| linear | 2 | 94.85 | 97.52 | -43.42 | 86.85 | 3.948 | 1 | 0.0469 |
| smooth (df = 2) | 3 | 80.53 | 85.07 | -35.26 | 70.53 | 16.324 | 1 | <0.0001 |
| smooth (df = 3) | 4 | 82.49 | 89.69 | -35.24 | 70.49 | 0.039 | 1 | 0.8440 |
| smooth (df = 4) | 5 | 83.12 | 94.01 | -34.56 | 69.12 | 1.370 | 1 | 0.2418 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2000 | 2017 | 5.672 | 5.035 | -0.6375 | 0.2128 | -2.995 | 0.0103 |
| last 20 years | 2000 | 2017 | 5.672 | 5.035 | -0.6375 | 0.2128 | -2.995 | 0.0103 |
Status assessment
No assessment criteria
Raw data with supporting information
__sdmn_pac1_au.jpg "Raw data with supporting information for assessment of c1 phenanthrenes in sediment at outer (Firth of Clyde)")
Raw data with assessment
__sdmn_pac1_da.jpg "Raw data with assessment of c1 phenanthrenes in sediment at outer (Firth of Clyde)")
Assessment plot
__sdmn_pac1_as.jpg "Assessment plot for c1 phenanthrenes in sediment at outer (Firth of Clyde)")
PAH (alkylated) data
__sdmn_p(l)da.jpg "PAH (alkylated) data for assessment of c1 phenanthrenes in sediment at outer (Firth of Clyde)")
PAH (alkylated) assessment
__sdmn_p(l)as.jpg "PAH (alkylated) assessment of c1 phenanthrenes in sediment at outer (Firth of Clyde)")
Related pages
