CSEMP assessment of CB28 in sediment at middle (Firth of Clyde)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 62.78 | 65.03 | -28.39 | 56.78 | | | |
| linear | 2 | 61.58 | 66.16 | -26.79 | 53.58 | 3.192 | 1 | 0.0740 |
| smooth (df = 2) | 3 | 60.76 | 69.09 | -25.38 | 50.76 | 2.827 | 1 | 0.0927 |
| smooth (df = 3) | 4 | 57.19 | 71.59 | -22.60 | 45.19 | 5.567 | 1 | 0.0183 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2007 | 2018 | -1.3318 | -0.7005 | 0.6314 | 0.3302 | 1.912 | 0.0882 |
| last 20 years | 2007 | 2018 | -1.3318 | -0.7005 | 0.6314 | 0.3302 | 1.912 | 0.0882 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.4964 | 0.2200 | -0.8137 | 0.1806 | -4.505 | 0.9993 |
| EAC | 0.4964 | 1.7000 | 1.2311 | 0.1806 | 6.816 | <0.0001 |
Raw data with supporting information
__sdmn_cb28_au.jpg "Raw data with supporting information for assessment of CB28 in sediment at middle (Firth of Clyde)")
Raw data with assessment
__sdmn_cb28_da.jpg "Raw data with assessment of CB28 in sediment at middle (Firth of Clyde)")
Assessment plot
__sdmn_cb28_as.jpg "Assessment plot for CB28 in sediment at middle (Firth of Clyde)")
Chlorobiphenyls data
__sdmn_chlrda.jpg "Chlorobiphenyls data for assessment of CB28 in sediment at middle (Firth of Clyde)")
Chlorobiphenyls assessment
__sdmn_chlras.jpg "Chlorobiphenyls assessment of CB28 in sediment at middle (Firth of Clyde)")
Related pages
