To reset the original certainty range before beginning the next section:
In the forecast chart, either:
Move the higher-value (right) certainty grabber until the certainty maximum field shows positive infinity, or
Type +Infinity in the right (maximum) field (accessible with the Tab key).
Either:
Move the lowest-value (left) certainty grabber until the certainty minimum field shows negative infinity, or
Type –Infinity in the left (minimum) field, accessible with the Tab key.
The forecast chart displays a certainty level of 100%, as displayed in the original forecast.