VM TTR values

[Koen G]

Since the main discussion is going on in the off-topic section, I thought it might be worthwhile to make a separate thread for discussion of the VM values.
Once again I'd like to thank everyone who helped me out, many interventions were required for me to get to this point. I would be so hopeless without you guys.
I redid everything using Rene's ZL2a file (more spaces) as recommended by Nablator. From this I isolated five sections:

1. Herbal A 
   
2. Herbal B
   
3. Q13
   
4. Small plants (with labels removed, so only the paragraphs)
   
5. Q20
   

I then used Nablator's code to calculate the following MATTR window sizes: 2, 3, 4, 5, 10, 20, 50, 100, 500.
Using my corpus of 471 texts, I calculated mean and stdev for each window. This allowed me to normalize the values.
The result is as follows:

   

As you can see, both B-sections (orange and red) behave similarly. 
Herbal A and the paragraphs from the small plants behave very similarly as well. Is the latter entirely A?

And Q13 has overall much lower values. The way I read the graph, this appears to be the result of larger distance repetitions. Below 5, it starts to approach the other sections again.