C L N E E D r = ∑ C ∑ G A G E D S T r , c , p ∗ c l a g e c ∗ c l n f r {\displaystyle CLNEED_{r}=\sum ^{C}\sum ^{G}AGEDST_{r,c,p}*\mathbf {clage} _{c}*\mathbf {clnf} _{r}}
<math>CLSF_{r}=(1-\frac{CLAVAL_{r}}{CLNEED_{r}})^\mathbf{clexp}