Do you mean the observations go up and down once is a cycle? Then based on the plot, the big jump might be a good indicator. The jumps are pretty large. To calculate jumps, you can generate them from Time Series platform directly. Look for Difference, then follow the steps accordingly. In the end, "Save" column from the Difference report.
![peng_liu_0-1655474267540.png peng_liu_0-1655474267540.png](https://community.jmp.com/t5/image/serverpage/image-id/43376i86E5F9A7E4A75F04/image-size/medium?v=v2&px=400)
Otherwise, using JMP column formula to generate the jumps is also straightforward. Right click on your data column, choose "New Formula Column", choose "Row", choose "Difference".