t j = ∑ i λ j u i j
r j = ∑ i λ j u i j
s j = t j − r j
t 1 = 2.5
r 1 = 3.1
s 1 = − 0.6
t 2 = 3.8
r 2 = 1.1
s 2 = 2.7
t 3 = 4.3
r 3 = 1.2
s 3 = 3.1
t 4 = 3.5
r 4 = 1.6
s 4 = 1.9
t 5 = 1.8
r 5 = 2.8
s 5 = − 1
t 6 = 2.2
r 6 = 3.5
s 6 = − 0.7