Wiki has their data: https://upload.wikimedia.org/wikipedia/en/thumb/d/d1/Michels...
In Michelson's own words (per wiki):
> The expected deviation of the interference fringes from the zero should have been 0.40 of a fringe – the maximum displacement was 0.02 and the average much less than 0.01 – and then not in the right place.
The data doesn't look anything like a signal, and wiki also says:
> Roberts (2006) has pointed out that the primitive data reduction techniques used by Miller and other early experimenters, including Michelson and Morley, were capable of creating apparent periodic signals even when none existed in the actual data.
> But subsequent experiments stopped rotating the assembly at all and just relied on the rotation of earth
This is also untrue. Per https://arxiv.org/abs/1002.1284 (found via references in wiki):
> Our measurement compares the resonance frequencies of two orthogonal optical resonators that are implemented in a single block of fused silica and are rotated continuously on a precision air bearing turntable