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 | 145.51 | 146.80 | -69.76 | 139.51 | | | |
| linear | 2 | 147.20 | 149.67 | -69.60 | 139.20 | 0.306 | 1 | 0.5800 |
| smooth (df = 2) | 3 | 147.95 | 152.11 | -68.97 | 137.95 | 1.259 | 1 | 0.2619 |
| smooth (df = 3) | 4 | 145.72 | 152.27 | -66.86 | 133.72 | 4.222 | 1 | 0.0399 |
| smooth (df = 4) | 5 | 147.33 | 157.13 | -66.66 | 133.33 | 0.394 | 1 | 0.5300 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2000 | 2017 | 5.353 | 5.525 | 0.17259 | 0.31082 | 0.555 | 0.5869 |
| last 20 years | 2000 | 2017 | 5.353 | 5.525 | 0.17259 | 0.31082 | 0.555 | 0.5869 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 250.9 | 24.0 | -2.3471 | 0.1669 | -14.064 | 1.0000 |
| ERL | 250.9 | 665.0 | 0.9746 | 0.1669 | 5.840 | <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)")
Related pages
