Bugfix Vertical Plot fix incorrect x-values/x-axis labels

[bikegeek]

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Describe the Problem

see METviewer #604
dtcenter/METviewer#604

Expected Behavior

refer to this issue
dtcenter/METviewer#604

Environment

Describe your runtime environment:
1. Machine: (e.g. HPC name, Linux Workstation, Mac Laptop)
2. OS: (e.g. RedHat Linux, MacOS)
3. Software version number(s)

To Reproduce

Describe the steps to reproduce the behavior:
1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error
Post relevant sample data following these instructions:
https://dtcenter.org/community-code/model-evaluation-tools-met/met-help-desk#ftp

Relevant Deadlines

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Funding Source

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Milestone and Projects###

• Select Milestone as the next bugfix version
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• Select METplotpy-X.Y.Z Development project for development toward the next official release

Define Related Issue(s)##

Consider the impact to the other METplus components.

• METplus, MET, METdataio, METviewer, METexpress, METcalcpy, METplotpy

Bugfix Checklist

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• Complete the issue definition above, including the Time Estimate and Funding Source.
• Fork this repository or create a branch of main_<Version>.
  Branch name: bugfix_<Issue Number>_main_<Version>_<Description>
• Fix the bug and test your changes.
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• Add any new Python packages to the METplus Components Python Requirements table.
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• Complete the steps above to fix the bug on the develop branch.
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  Select: METplotpy-X.Y.Z Development project for development toward the next official release
• Close this issue.