pcm: C-state counters are missing in the Graphical Perfmon front end on Windows

On my Windows machine pcm.exe shows:

C0 (active,non-halted) core residency: 5.07 %
C1 core residency: 13.72 %; 
C3 core residency: 0.30 %; 
C6 core residency: 0.00 %; 
C7 core residency: 80.91 %;

C0 package residency: 50.45 %;
C2 package residency: 25.83 %;
C3 package residency: 2.27 %;
C6 package residency: 0.02 %;
C7 package residency: 1.99 %;
C8 package residency: 19.44 %; 
C9 package residency: 0.00 %; 
C10 package residency: 0.00 %;

but when I use the Graphical Perfmon front end and view the new PCM* counters I can only see:

\PCM Core Counters(*)\core C0-state residency (%)
\PCM Core Counters(*)\core C3-state residency (%)
\PCM Core Counters(*)\core C6-state residency (%)
\PCM Core Counters(*)\core C7-state residency (%)

\PCM Socket Counters(*)\package C2-state residency (%)
\PCM Socket Counters(*)\package C3-state residency (%)
\PCM Socket Counters(*)\package C6-state residency (%)
\PCM Socket Counters(*)\package C7-state residency (%)

Hence, C1 core, C0 package, C8 package, C9 package and C10 package are missing.

I am using the third-party open source WinRing0 driver from RealTemp.

Based on code found in PCMService.h, it seems to be by design but I don’t understand why some essential states have been removed.