Three$-$Point Estimate $($TE$)-$ Pessimistic $($a$),$ Likely $($b$)$ and Optimistic $($c$)$

$\backslash$table$[[\backslash$table$[[$Early$],[$Start$]],\backslash$table$[[$ID$],[$Number$]],\backslash$table$[[$Early$],[$Finish$]]],[\backslash$table$[[$Activity$],[$Float$]],$Activity Descriptor$],[\backslash$table$[[$Late$],[$Start$]],\backslash$table$[[$Activity$],[$Duration$]],\backslash$table$[[$Late$],[$Finish$]]]]$

$TE=\frac{a+4b+c}{6}$

Forward Pass Rules $($ES &TEF$)$

$,ES+$ Duration $=EF$

$,$ EF of predecessor $=$ ES of successor

Backward Pass Rules $($LS & LF$)$

$,$ LF $-$ Duration $=$ LS

$,$ LS of successor $=$ LF of predecessor