Hi, I am having a difficult time understanding what to look for when evaluating the APS results and notice that in one of the comments above, correlation was one way of determining if the data looks incorrect. What exactly qualifies as correlation between DEM, vel/displ, integrated height etc.? After processing the data in the APS module, I typically look for peaks at zero for each parameter in the data (similar to what was discussed in the tutorials) However, I often get irregularities in height which I feel is alright. Thank you.