Here is a list of what you can do by changing this byte. These are the ones that work 100% of the time. Meaning, these effects will ALWAYS happen. There are more (I didn't test from 00-C0) but I'm sure they are the same effects, just with less of a chance of happening. I know 01 has a 10% chance of putting an opponent to sleep, 03 has a 10% chance of burning an opponent, etc...

I've just started looking into other moves and found that below C0 they aren't the same effects. For example looking at Shadow Ball its effect is:

Wherein 1A lowers opponent's special defense by 1 stage. It doesn't seem to have a set percentage, you have to set it in PGE. Also looking at Psycho Boost and Overheat they have their effect set at 100 so perhaps these offsets you've listed don't have a 100% chance to happen?

Edit: Further research has revealed that offsets between 01 and 3B roughly follow the same pattern as those listed above but for the opponent. So far all the stat changers correspond as will status changers. Im not sure about recoil or outrage.