P1

P2

P3

Px

Sum

P1

S1/S1

S1/S2

S1/S3

S1/Sx

∑P1

RSRM Service =

1/N [

P2

S2/S1

S2/S2

S2/S3

S2/Sx

] = [

∑P2

]

P3

S3/S1

S3/S2

S3/S3

S3/Sx

∑P3

Py

Sy/S1

Sy/S2

Sy/S3

Sy/sx

∑Py