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14. Adding a Break Point

Note: when adding a break point to MAT data plot, the break point will be added to both minimum and maximum temperature plots for the selected date.

The effect of adding a break point to a segment that already has a correction factor is that the segment is divided into two and each new segment takes the correction factor of the segment before it was divided. The two new segments are defined by the break point. For example:

Before adding a break point bp:

Segment Id	Starting Point	Ending Point	Correction Factor
1	i	j	cf

After adding a break point bp:

Segment Id	Starting Point	Ending Point	Correction Factor
1.1	i	bp	cf
1.2	bp	j	cf

Only one break point can be added at a time. To add another break point, the user must select the Add option again.

The order of doing add(s), delete(s) and/or move(s) will result in different correction factors for the same final segments if correction factors are not recalculated for all segments that are effected by the operations. See Appendix 2 for more details.