Wrong timestamp in CSV export with combined timestamp

[SammysHP]

Describe the bug
When exporting data as CSV using "combine all timestamp", the written timestamp is wrong. It uses the timestamp from the highest resolution column even for columns with lower rate.

To Reproduce
Steps to reproduce the behavior:

1. Do a measurement
2. Export recorded data as CSV, using "combine all timestamps"

Expected behavior
Actual time of the measurements.

Screenshots or log
Here are two example files, saved from the same session. Output was enabled for approximately 30 seconds.

combined_output_disabled.csv

combined_output_enabled.csv

Enviroment (please complete the following information):

• SmuView-0.0.6-git-a5ffb66-x86_64.AppImage
• Arch Linux