c:\jobs\samples\EM0_40.PLT and EM50_100.PLT
 
These are "EdgeMatch" charts that correlate to the EdgeMatch CMYK charts that are in the Fill Dialog box when you click on CMYK.
 
Each chart includes a base yellow percentage (ie 20% yellow).  The Cyan and magenta change in 5% and 10% increments across and down.  There is no black in any of the charts.
 
I usually scale the charts to 50% size so I can fit them 1 above the other.  Also, the text is spot black,  I would suggest you change that to be C or M to save a color.
 
There is also a Pantone_Color_Bridge.PLT file that is in the same folder.
 
I hope this helps.  Thanks.