CSEMP assessment of phenanthrene 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 | 124.24 | 125.52 | -59.12 | 118.24 | | | |
| linear | 2 | 122.79 | 125.25 | -57.39 | 114.79 | 3.450 | 1 | 0.0632 |
| smooth (df = 2) | 3 | 108.57 | 112.74 | -49.28 | 98.57 | 16.218 | 1 | <0.0001 |
| smooth (df = 3) | 4 | 110.49 | 117.04 | -49.25 | 98.49 | 0.077 | 1 | 0.7815 |
| smooth (df = 4) | 5 | 111.96 | 121.76 | -48.98 | 97.96 | 0.529 | 1 | 0.4670 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2000 | 2017 | 4.951 | 4.436 | -0.5144 | 0.1870 | -2.752 | 0.0156 |
| last 20 years | 2000 | 2017 | 4.951 | 4.436 | -0.5144 | 0.1870 | -2.752 | 0.0156 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 84.45 | 32.00 | -0.9705 | 0.1552 | -6.255 | 1.0000 |
| ERL | 84.45 | 240.00 | 1.0444 | 0.1552 | 6.732 | <0.0001 |
Raw data with supporting information
__sdmn_pa_au.jpg "Raw data with supporting information for assessment of phenanthrene in sediment at outer (Firth of Clyde)")
Raw data with assessment
__sdmn_pa_da.jpg "Raw data with assessment of phenanthrene in sediment at outer (Firth of Clyde)")
Assessment plot
__sdmn_pa_as.jpg "Assessment plot for phenanthrene in sediment at outer (Firth of Clyde)")
PAH (parent) data
__sdmn_p(p)da.jpg "PAH (parent) data for assessment of phenanthrene in sediment at outer (Firth of Clyde)")
PAH (parent) assessment
__sdmn_p(p)as.jpg "PAH (parent) assessment of phenanthrene in sediment at outer (Firth of Clyde)")
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