From SD Gundam G Generation Overworld Wiki
A quick way to check whether a particular unit can be obtained by capturing, and developing.
- 0 means the unit in question can be captured.
- 1 means the unit can be developed from a "0" unit.
- 2 means the unit can be developed from a "1" unit.
- - means the unit cannot be captured nor developed (directly or indirectly) from a unit that can be captured.