CSEMP assessment of pyrene in sediment at inner (Firth of Clyde)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 149.14 | 150.64 | -71.57 | 143.14 | | | |
| linear | 2 | 144.32 | 147.23 | -68.16 | 136.32 | 6.817 | 1 | 0.0090 |
| smooth (df = 2) | 3 | 146.30 | 151.30 | -68.15 | 136.30 | 0.015 | 1 | 0.9027 |
| smooth (df = 3) | 4 | 144.85 | 152.85 | -66.42 | 132.85 | 3.459 | 1 | 0.0629 |
| smooth (df = 4) | 5 | 141.17 | 153.42 | -63.58 | 127.17 | 5.677 | 1 | 0.0172 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2002 | 2017 | 5.351 | 6.611 | 1.2598 | 0.4297 | 2.932 | 0.0117 |
| last 20 years | 2002 | 2017 | 5.351 | 6.611 | 1.2598 | 0.4297 | 2.932 | 0.0117 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 743.3 | 24.0 | -3.433 | 0.241 | -14.231 | 1.0000 |
| ERL | 743.3 | 665.0 | -0.111 | 0.241 | -0.461 | 0.6739 |
Raw data with supporting information
__sdmn_pyr_au.jpg "Raw data with supporting information for assessment of pyrene in sediment at inner (Firth of Clyde)")
Raw data with assessment
__sdmn_pyr_da.jpg "Raw data with assessment of pyrene in sediment at inner (Firth of Clyde)")
Assessment plot
__sdmn_pyr_as.jpg "Assessment plot for pyrene in sediment at inner (Firth of Clyde)")
PAH (parent) data
__sdmn_p(p)da.jpg "PAH (parent) data for assessment of pyrene in sediment at inner (Firth of Clyde)")
PAH (parent) assessment
__sdmn_p(p)as.jpg "PAH (parent) assessment of pyrene in sediment at inner (Firth of Clyde)")
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