CSEMP assessment of chrysene 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 | 141.91 | 143.19 | -67.95 | 135.91 | | | |
| linear | 2 | 143.89 | 146.35 | -67.94 | 135.89 | 0.020 | 1 | 0.8875 |
| smooth (df = 2) | 3 | 144.77 | 148.94 | -67.39 | 134.77 | 1.111 | 1 | 0.2918 |
| smooth (df = 3) | 4 | 142.43 | 148.98 | -65.22 | 130.43 | 4.340 | 1 | 0.0372 |
| smooth (df = 4) | 5 | 143.67 | 153.47 | -64.83 | 129.67 | 0.766 | 1 | 0.3814 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2000 | 2017 | 4.921 | 4.963 | 0.04270 | 0.30083 | 0.142 | 0.8890 |
| last 20 years | 2000 | 2017 | 4.921 | 4.963 | 0.04270 | 0.30083 | 0.142 | 0.8890 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 143.1 | 20.0 | -1.9675 | 0.1617 | -12.168 | 1.0000 |
| ERL | 143.1 | 384.0 | 0.9874 | 0.1617 | 6.107 | <0.0001 |
Raw data with supporting information
_sdmn_chr_au.jpg "Raw data with supporting information for assessment of chrysene in sediment at Hunterston (Clyde)")
Raw data with assessment
_sdmn_chr_da.jpg "Raw data with assessment of chrysene in sediment at Hunterston (Clyde)")
Assessment plot
_sdmn_chr_as.jpg "Assessment plot for chrysene in sediment at Hunterston (Clyde)")
PAH (parent) data
_sdmn_p(p)da.jpg "PAH (parent) data for assessment of chrysene in sediment at Hunterston (Clyde)")
PAH (parent) assessment
_sdmn_p(p)as.jpg "PAH (parent) assessment of chrysene in sediment at Hunterston (Clyde)")
Related pages
