[cotega]

Hi,

In the robot calibration results, there is the following value :
mean (mm) std (mm) max (mm) Six Sigma points.

I believe the value of Six σ显示是“ mean + 3*std". Should it be written '3 sigma' instead of "six sigma", or is there a reference to a norm that explain why six sigma =mean + 3*std ?


Thanks for the clarification