How to read the Stock CPU Usage data

Question

On Ice Cream Sandwich, an option in the Developer Options is \"Show CPU Usage\", which adds an overlay on the screen (see screenshot below).

My question is, how do I re

Answer 1

This should be the Unix load average. Wikipedia has a nice article about this.

The numbers show the average load of the CPU in different time intervals. From left to right: last minute/last five minutes/last fifteen minutes