CSEMP assessment of c3 naphthalenes 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 | 92.58 | 93.97 | -43.29 | 86.58 | | | |
| linear | 2 | 89.07 | 91.73 | -40.53 | 81.07 | 5.514 | 1 | 0.0189 |
| smooth (df = 2) | 3 | 72.05 | 76.60 | -31.03 | 62.05 | 19.017 | 1 | <0.0001 |
| smooth (df = 3) | 4 | 73.75 | 80.95 | -30.88 | 61.75 | 0.298 | 1 | 0.5849 |
| smooth (df = 4) | 5 | 75.56 | 86.45 | -30.78 | 61.56 | 0.195 | 1 | 0.6588 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2000 | 2017 | 5.557 | 4.836 | -0.7219 | 0.1736 | -4.158 | 0.0011 |
| last 20 years | 2000 | 2017 | 5.557 | 4.836 | -0.7219 | 0.1736 | -4.158 | 0.0011 |
Status assessment
No assessment criteria
Raw data with supporting information
__sdmn_napc3_au.jpg "Raw data with supporting information for assessment of c3 naphthalenes in sediment at outer (Firth of Clyde)")
Raw data with assessment
__sdmn_napc3_da.jpg "Raw data with assessment of c3 naphthalenes in sediment at outer (Firth of Clyde)")
Assessment plot
__sdmn_napc3_as.jpg "Assessment plot for c3 naphthalenes in sediment at outer (Firth of Clyde)")
PAH (alkylated) data
__sdmn_p(l)da.jpg "PAH (alkylated) data for assessment of c3 naphthalenes in sediment at outer (Firth of Clyde)")
PAH (alkylated) assessment
__sdmn_p(l)as.jpg "PAH (alkylated) assessment of c3 naphthalenes in sediment at outer (Firth of Clyde)")
Related pages
