CSEMP assessment of chrysene in sediment at Off Southend-on-sea (Thames)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 91.91 | 97.91 | -42.95 | 85.91 | | | |
| linear | 2 | 93.71 | 109.71 | -42.85 | 85.71 | 0.201 | 1 | 0.6540 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2005 | 2017 | 3.967 | 3.324 | -0.6432 | 1.3889 | -0.463 | 0.6674 |
| last 20 years | 2005 | 2017 | 3.967 | 3.324 | -0.6432 | 1.3889 | -0.463 | 0.6674 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 27.8 | 20.0 | -0.3280 | 1.0941 | -0.300 | 0.6104 |
| ERL | 27.8 | 384.0 | 2.6269 | 1.0941 | 2.401 | 0.0371 |
Raw data with supporting information
Raw data with assessment
Assessment plot
PAH (parent) data
da.jpg "PAH (parent) data for assessment of chrysene in sediment at Off Southend-on-sea (Thames)")
PAH (parent) assessment
as.jpg "PAH (parent) assessment of chrysene in sediment at Off Southend-on-sea (Thames)")
Related pages
