Yijkl:	Air velocity measured in the Section i at conditions j at k height by sensor l.
μ:	Overall mean.
Zi:	Measurement Section (2).
Bj:	Boundary conditions (4).
Hk:	Height of sensor (2).
Sl(k):	Sensor (24) hierarchical to height.
(Z × B)ij:	Interaction Section-Boundary (8).
(Z × H)ik:	Interaction Section-Height (8).
(B × H)jk:	Interaction Boundary-Height (8).
(Z × B × H)ijk:	Triple interaction Section-Boundary-Height (16).
(Z × S)il(k):	Interaction Section-Sensor (48).
(B × S)jl(k):	Interaction Boundary-Sensor (96).
(Z × B × S)ijl(k):	Triple interaction Section-Boundary-Sensor (residual term of the model).