How is tfwhr measured?

[nihilist l-mtn]

If I have a slight widow's peak, do I count it or not? If I count it, it gives me 1.20 if I count where my hairline is straight it gives me 1.30

 

[Fleisch]

By using math

 

[TheTD7]

short either way

 

[nihilist l-mtn]

short either way

1.30 is within the ideal range