Lunar Anomalies #8

When I look at a histogram of the data values, I get some very strange structures.  Here are two fairly typical examples:

This is just a normal histogram -- so the x-axis (range 0:255) is the data value and the y-axis (range 0:128) is the number of pixels that have that data value.  These are 64x64 subarrays, so there are a total of 4096 pixels represented in these histograms.

These are telling me that the distribution of data values has a varying structure.

Weird.

Here are the histograms of the top 225 of a section of LRO dataset M1502001921LC:

I know, hard to see any details.  The point is to show the distribution of histograms.

Not really sure what's going on here...