activity times:

$\backslash$table$[[$Activity$,$Time $($weeks$)$ Immediate Predecessor$($s$),$Activity,Time $($weeks$)$ Immediate Predecessor$($s$)],[$A$,5,-,$E$,3,$B$,,,,],[$B$,8,-,$F$,6,$B$,,,,],[$C$,3,$A$,$G$,10,$C$,$ E$,,,,],[$D$,1,$A$,$H$,6,$D$,$ F$,,,,]]$

Dave's earliest start $($ES$)$ and earliest finish $($EF$)$ are:

$\backslash$table$[[$Activity$,$ES$,$EF$],[$A$,,5]]$