rtnoise should be stop before noiseestimate.
Scaling the MEG data is wrong. The MEG data is not multiplied by the coefficients (i.e. 2.55e-8). It should not be divided by 1e-15 or something. I did some little change. Please make further modifications with other good ideas.
Forget to comment debug info.
Merge pull request #155 from liminsun/master

Change the scale