It is the time difference from the nth selected edge type on input1 to the nth selected edge type
on input2.
| Significance of statistics: |
| Mean | This gives the average skew in seconds between the two waveforms. |
| Min | This is the minimum skew between the two waveforms. |
| Max | This is the maximum skew between the two waveforms. |
| Peak cy-cy | This value gives the maximum difference between any two consecutive skew values. |
| Peak-to-peak | This value is the absolute difference between the max skew and the min skew. |