Clarification Wanted: "Tailless Aircraft" Book

[Aerowerx]

Just after formula 2.2.13 (page 45 in my copy), there is the following statement:

The first term c_MW depends upon the distribution of the zero lift coefficient c_lo(y) as can be seen by Formula (2.2.12).

(My emphasis)

But in Figure 2.1.3 (page 36 in my copy), c_lo(y) is defined as the lift at an AoA of 0.0 degrees. So is the above statement an error? I think it is, but want to see what others here on HBA think. I checked the errata sheet, but this is not mentioned.

 

[Norman]

 

[Aerowerx]

 

[Aerowerx]