Read out single and summary coverage(without Regex)

I have the issue that I need to read out the coverage results from coverlet. Is it possible to get the values of single and summary coverage of the results in a practical way (without using string or regex operations)?

Example:

Write-Host hashtable["Project.UnitTest.dll"]
>> "41.89", "74.54", "70.87"

Write-Host hashtable["Total"]
>> "41.89", "74.54", "70.87"

Write-Host hashtable["Average"]
>> "41.89", "74.54", "70.87"

[Nusserdt]

@MarcoRossignoli found a solution thats works for me. I found out that all these information can easily extract from the report. Thanks for all.

[MarcoRossignoli]

Great!