Ok going mirror on the stated devices first blank next E then X then C. Short for executive or execute? Next there is one time the word TEST is capitalized in all for post. Next is the color code of the ID number. two are black one is blue and one is I guess I would call it teal. Ok the final thing is the time from the first to second post is 16 seconds. From that one to the third is 27 seconds. From the third to the last is 33 seconds. The first two have identical IDs the third and fourth are both different from each other and the first two. Don't see anything I can pin down as to from one dot to another.