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| Variable | Average (colour fill) | Spread <1 (contours) | Spread ~1 (contours) | Spread >1 (contours) |
|---|---|---|---|---|
| 2m temperature |
| 0.2 (dotsolid), 0.3 (dash-dot), 0.5 (dash), 0.7 (solid) | 0.9 (solid), 1.1 (solid, thick) transparent grey shading in-between | 1.3 (solid), 1.5 (dash), 1.7 (dash-dot), 2 (dotsolid) all thick |
| Surface temperature |
| 0.2 (dotsolid), 0.3 (dash-dot), 0.5 (dash), 0.7 (solid) | 0.9 (solid), 1.1 (solid, thick) transparent grey shading in-between | 1.3 (solid), 1.5 (dash), 1.7 (dash-dot), 2 (dotsolid) all thick |
| Mean Sea Level Pressure |
| 0.2 (dotsolid), 0.3 (dash-dot), 0.5 (dash), 0.7 (solid) | 0.9 (solid), 1.1 (solid, thick) transparent grey shading in-between | 1.3 (solid), 1.5 (dash), 1.7 (dash-dot), 2 (dotsolid) all thick |
| Accumulated Precipitation |
| 0.1 (dot), 0.4 (dash), 0.7 (solid) | 0.9 (solid), 1.2 (solid, thick) transparent grey shading in-between | 1.5 (solid), 2 (dash), 4 (dot) all thick |
| Meaning | Outcomes above and below this value are equally likely (value is the median anomaly) | The lower the value the smaller the forecast spread and therefore the higher the confidence. | This represents spread similar to climatology, so low confidence. | This represents spread > climatology, so very low confidence overall, accentuated for higher values. |
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