0 = No Current Proficiency / Skill Requirement
1 = Required Proficiency / Skill | No Current Competency
2 = Required Proficiency / Skill | Partial Competency Level
3 = Required Proficiency / Skill | Good Competency Level
4 = Required Proficiency / Skill | Advanced/Trainer Competency Level
5 = Strategic Influence/Power
The skills rating is a number and colour, so that when you produce the skills matrix you can visually interpret the result both by the score (accumulation of numbers) and as a heat-map (areas of red needing development, through to green showing strong capability).
An example of the completed matrix would look akin to the below: