[FabHK]

When you look at the graph at the bottom, several independent measurements have non-overlapping error bars, and are even on opposite sides of the Standard Model prediction. So, yeah, somewhere along the line there've been bad measurement errors...

[davrosthedalek]

Since error bars are typically +-1 sigma, you expect about 1/3 of all measurements to be further away from the true value than the error bar, if all error estimates are correct, and uncorrelated. That's actually a check a lot of doctored data fails.