CSEMP assessment of naphthalene 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 | 37.16 | 43.16 | -15.58 | 31.16 | | | |
| linear | 2 | 37.60 | 53.60 | -14.80 | 29.60 | 1.558 | 1 | 0.2120 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2005 | 2017 | 3.583 | 4.412 | 0.8297 | 0.6224 | 1.333 | 0.2534 |
| last 20 years | 2005 | 2017 | 3.583 | 4.412 | 0.8297 | 0.6224 | 1.333 | 0.2534 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 82.46 | 8.00 | -2.3329 | 0.4608 | -5.063 | 0.9964 |
| ERL | 82.46 | 160.00 | 0.6629 | 0.4608 | 1.438 | 0.1118 |
Raw data with supporting information
Raw data with assessment
Assessment plot
PAH (parent) data
da.jpg "PAH (parent) data for assessment of naphthalene in sediment at Off Southend-on-sea (Thames)")
PAH (parent) assessment
as.jpg "PAH (parent) assessment of naphthalene in sediment at Off Southend-on-sea (Thames)")
Related pages
