Currently the sort seems to be the number of reads (in the period) and then the plate number. It would be much more useful if the secondary “tie breaker” is by the most recent detection timestamp. I have lots of plates that “tie” for the number of reads and the lower number plates (3ABC, 4DEF, etc.) always appear before the higher number plates (8TUV, 9XYZ). And all those appear before plates starting with letters (IMAGEEK, GR8PL8, etc.)
