|d12 or d6 roll||base or x1||x2||x5|
Use the x5 column for silver. For gold, ignore results above 6 (gold is only present 50% of the time.)
For dungeon levels below the first, multiply the result by 10 for every 6 full levels of depth. To find what column to use on the previous table, take the remainder after dividing the dungeon level by 6 and look it up on the Dungeon Treasure Adjustment table. Note that the silver column is basically the gold column multiplied by 5.
I'm looking at Treasure Table II (wilderness/lair stocking table) next, to see if it can be simplified and compressed. I think I can reduce it to four basic types (Adventure, Cache, Hoard, and Individual) and express the others as subtypes or variants.