Hey everyone, sorry I was not able to do another input test yesterday, but I will for sure tonight.
As far as that 4th row, it looks like it's the "channel". Here is an example from another button with all the input data (not the shortened version I have been providing).
TIMESTAMP IN PORT STATUS DATA1 DATA2 CHAN NOTE EVENT
00071E56 4 -- 90 34 7F 1 E 3 Note On
00071ED5 4 -- 90 34 00 1 E 3 Note Off
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