ok: so the medal points are:
salthi 7
dralthi/krant 10
gratha/jalthi/hhriss 15
dorkir 15
ralari 25
fralthi 50
snakeir 70
star post 75
confederation ship (ie wingman) -1
friendly ship saved (ie protect the drayman) 25
in addition, the lumbari in sm2 is also worth 15 (as it is essentially a dorkir).
This information is apparently from "David Raley's Mission.wc" which google finds no hits for.
If anyone has a copy of that, or other similar documents, then i would certainly like to get hold of a copy and I'm sure the CIC would.
EDIT - Ignore that, last line, I have a copy by a different name in my archives!