How to read RRD quality graphs

[jahyde]

Trying to read the quality graphs, totally lost.

It has seconds% on the left - what does this mean, a percentage of loss for that many seconds? this makes no sense, loss appears to be recorded like 270m does that mean m for milliseconds? And how do I know the percentage of loss?

Then if I generate the table, the numbers there are like .022562, is this a decimal percentage of loss?? so 2.2 percent loss?