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Changes between Version 9 and Version 10 of IppToPspsDatastorePV3Descriptions

-              v9
+              v10
 Subdivide sky into the 32 declination layers. Each of the 32 layers has an equal amount of data in each layer (so, the thickness of the layers will vary, in order to increase/decrease the amount of data. These layers correspond to one each of the new PSPS Load/Merge machines. The layers have a minimum height greater than half the field of view. This is so that no single frame image spans more than 2 layers,
+hence each layer must be >= 1.7 degrees. The spacing will be calculated from the full data set - it is more complex than just the density of sources on the sky - there is also the difference in the tables populated in the division between galactic and extragalactic regions.
+hence each layer must be >= 1.7 degrees. The spacing will be calculated from the full data set - it is more complex than just the density of sources on the sky - there is also the difference in the tables populated in the division between galactic and extragalactic regions.  NOTE the PSPS convention is the northernmost layer, including the CNP, is Layer 01, i.e. they count down from the north pole.
+This is an odd convention, but we should stick with it because eventually we will expand further south, and will not want to relabel everything, so we can just add more layers with higher index numbers.
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