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 | 149.94 | 151.14 | -71.97 | 143.94 | | | |
| linear | 2 | 151.93 | 154.22 | -71.97 | 143.93 | 0.010 | 1 | 0.9190 |
| smooth (df = 2) | 3 | 153.07 | 156.91 | -71.53 | 143.07 | 0.864 | 1 | 0.3528 |
| smooth (df = 3) | 4 | 152.75 | 158.75 | -70.38 | 140.75 | 2.315 | 1 | 0.1282 |
| smooth (df = 4) | 5 | 152.44 | 161.35 | -69.22 | 138.44 | 2.307 | 1 | 0.1288 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2000 | 2018 | 4.926 | 4.955 | 0.02900 | 0.28466 | 0.102 | 0.9201 |
| last 20 years | 2000 | 2018 | 4.926 | 4.955 | 0.02900 | 0.28466 | 0.102 | 0.9201 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 141.9 | 20.0 | -1.9597 | 0.1514 | -12.941 | 1.0000 |
| ERL | 141.9 | 384.0 | 0.9952 | 0.1514 | 6.572 | <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
