Table 5. Values of the parameters in the differential equations describing the interactions among axes.

Interaction	Hill function	Parameter value
Double inhibition	$f\left(x\right)=\frac{100}{1+{\left(\frac{x}{e_x}\right)}^{h_x}}$	ex = 28 a
		hx = 4.2 b
Self-limiting effect	$k\left(x\right)=1+\frac{4}{1+{\left(\frac{\alpha \bullet x}{e_k}\right)}^{h_k}}$	ek = 25.57 a
		hk = 6.6 b
		α = 0.48 b

Units

^ang/mL

^bdimensionless.