Descripteur : Position of nostrils (index)

index = A/B
with A : distance from anterior eye margin to middle of nostril;
and B : distance from middle of the nostril to tip of the snout.

[1.7 - 1.8[

[1.8 - 2[

[2- 2.2[

[2.2 - 2.4[

[2.4 - 2.6[

[2.6 - 2.7[

[2.7 - 2.9[

[2.9 - 3.1[

[3.1 - 3.3[

[3.3 - 3.5]