CSEMP assessment of phenanthrene in sediment at Hunterston (Clyde)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 146.41 | 147.70 | -70.21 | 140.41 | | | |
| linear | 2 | 147.38 | 149.84 | -69.69 | 139.38 | 1.033 | 1 | 0.3094 |
| smooth (df = 2) | 3 | 148.23 | 152.39 | -69.11 | 138.23 | 1.153 | 1 | 0.2828 |
| smooth (df = 3) | 4 | 146.07 | 152.62 | -67.04 | 134.07 | 4.156 | 1 | 0.0415 |
| smooth (df = 4) | 5 | 147.30 | 157.10 | -66.65 | 133.30 | 0.772 | 1 | 0.3796 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2000 | 2017 | 4.846 | 5.163 | 0.3173 | 0.3103 | 1.023 | 0.3227 |
| last 20 years | 2000 | 2017 | 4.846 | 5.163 | 0.3173 | 0.3103 | 1.023 | 0.3227 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 174.73 | 32.00 | -1.6975 | 0.1657 | -10.245 | 1.0000 |
| ERL | 174.73 | 240.00 | 0.3174 | 0.1657 | 1.916 | 0.0373 |
Raw data with supporting information
_sdmn_pa_au.jpg "Raw data with supporting information for assessment of phenanthrene in sediment at Hunterston (Clyde)")
Raw data with assessment
_sdmn_pa_da.jpg "Raw data with assessment of phenanthrene in sediment at Hunterston (Clyde)")
Assessment plot
_sdmn_pa_as.jpg "Assessment plot for phenanthrene in sediment at Hunterston (Clyde)")
PAH (parent) data
_sdmn_p(p)da.jpg "PAH (parent) data for assessment of phenanthrene in sediment at Hunterston (Clyde)")
PAH (parent) assessment
_sdmn_p(p)as.jpg "PAH (parent) assessment of phenanthrene in sediment at Hunterston (Clyde)")
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