TICK extreme

Another NYSE TICK extreme off of a previous post {here}
Going back as far as my platform allows, TICKs greater than 1600 and weaker than -1800 are few and far between. Recently, we've had two TICKs > 1600 (today was one of them) in the last 4-days. While the "flash crash" was the lowest TICK reading in over 12-years.
curious