CSEMP assessment of CB180 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 | 181.81 | 183.01 | -87.91 | 175.81 | | | |
| linear | 2 | 183.81 | 186.10 | -87.91 | 175.81 | 0.001 | 1 | 0.9785 |
| smooth (df = 2) | 3 | 185.65 | 189.50 | -87.83 | 175.65 | 0.160 | 1 | 0.6887 |
| smooth (df = 3) | 4 | 186.55 | 192.55 | -87.28 | 174.55 | 1.098 | 1 | 0.2947 |
| smooth (df = 4) | 5 | 188.42 | 197.33 | -87.21 | 174.42 | 0.136 | 1 | 0.7125 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2000 | 2018 | -0.5481 | -0.5364 | 0.0117 | 0.4238 | 0.028 | 0.9784 |
| last 20 years | 2000 | 2018 | -0.5481 | -0.5364 | 0.0117 | 0.4238 | 0.028 | 0.9784 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.585 | 0.100 | -1.7662 | 0.2300 | -7.679 | 1.0000 |
| EAC | 0.585 | 12.000 | 3.0213 | 0.2300 | 13.136 | <0.0001 |
Raw data with supporting information
_sdmn_cb180_au.jpg "Raw data with supporting information for assessment of CB180 in sediment at Hunterston (Clyde)")
Raw data with assessment
_sdmn_cb180_da.jpg "Raw data with assessment of CB180 in sediment at Hunterston (Clyde)")
Assessment plot
_sdmn_cb180_as.jpg "Assessment plot for CB180 in sediment at Hunterston (Clyde)")
Chlorobiphenyls data
_sdmn_chlrda.jpg "Chlorobiphenyls data for assessment of CB180 in sediment at Hunterston (Clyde)")
Chlorobiphenyls assessment
_sdmn_chlras.jpg "Chlorobiphenyls assessment of CB180 in sediment at Hunterston (Clyde)")
Related pages
