Morale bonuses from drug items

This is a list of the various morale bonus for giving drug items to colonists. It might help you calculate morale for colonies and know what items are more worth than others. The cumulative max for drug items is +30.

+1 Stimbrew
+1 Heaven Herb
+1 Grassjuice
+1 Trumpeter Seeds
+1 Alcohol


This list is far from complete, but drugs really is not "my thing", so help from the more knowledgable out there would be appreciated.
cezton@nvg.ntnu.no