Mod = L₀ + C ((f₁)₀) / (f₁)₀ + (f₂)₀)

L₀ = BB - 0.5 = L0

C = TAK - TBK = C

(f₁)₀ = fm - 0 = F10

(f₂)₀ = fm - 0 = F20

Mod = l0 + C (f10 / (f10 + f20)

l0 + C (f10 / f120)

l0 + C (f1/f120)

l0 + Cf1/f120

Modus = Mod