CSEMP assessment of pyrene 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 | 153.89 | 155.09 | -73.95 | 147.89 | | | |
| linear | 2 | 155.54 | 157.83 | -73.77 | 147.54 | 0.350 | 1 | 0.5540 |
| smooth (df = 2) | 3 | 156.50 | 160.35 | -73.25 | 146.50 | 1.041 | 1 | 0.3076 |
| smooth (df = 3) | 4 | 156.21 | 162.21 | -72.11 | 144.21 | 2.286 | 1 | 0.1305 |
| smooth (df = 4) | 5 | 156.56 | 165.47 | -71.28 | 142.56 | 1.650 | 1 | 0.1990 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2000 | 2018 | 5.356 | 5.530 | 0.17399 | 0.29388 | 0.592 | 0.5621 |
| last 20 years | 2000 | 2018 | 5.356 | 5.530 | 0.17399 | 0.29388 | 0.592 | 0.5621 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 252.1 | 24.0 | -2.3519 | 0.1560 | -15.075 | 1.0000 |
| ERL | 252.1 | 665.0 | 0.9699 | 0.1560 | 6.217 | <0.0001 |
Raw data with supporting information
_sdmn_pyr_au.jpg "Raw data with supporting information for assessment of pyrene in sediment at Hunterston (Clyde)")
Raw data with assessment
_sdmn_pyr_da.jpg "Raw data with assessment of pyrene in sediment at Hunterston (Clyde)")
Assessment plot
_sdmn_pyr_as.jpg "Assessment plot for pyrene in sediment at Hunterston (Clyde)")
PAH (parent) data
_sdmn_p(p)da.jpg "PAH (parent) data for assessment of pyrene in sediment at Hunterston (Clyde)")
PAH (parent) assessment
_sdmn_p(p)as.jpg "PAH (parent) assessment of pyrene in sediment at Hunterston (Clyde)")
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