What's going on here?

I don't know how to make it full screen, but here is a screen shot of part of my probe calibration results from this morning. Usually I see some zeros, some .0001's, some .0002's and maybe a couple .0003's, but never all zeros. If I scroll all the way through all of my standard deviations read .0000 in my results, after calibrating this morning. I'm a little suspicious.