Chrono readings?

[Watcher]

I got this little reciept with my RT and it reads as follows:

STRING #26
High: 294.3 FPS - #002
Low: 291.2 FPS - #003

SD: 1.5
CV: 0.51%

MAD: 1.1
CV: 0.38%

AV: 292.9 FPS
ES: 3.1 FPS

#001: 293.1 FPS
#002: 294.3 FPS
#003: 291.2 FPS

I get what it all means in general, but what is SD, CV, and MAD mean?

Standard deviation? consistancy variation? something, displacement?

[SR_matt]

sd is probably standard deviation

the others im not sure
-matt