I have dumped all my software!
It is how people play on the day, older stats can put you crook.
Passive players start being loose aggressive as they learn the game, your software will tell you, they are tight and quiet, you can lose money easily before you pick their attitude change.
Try and follow patterns in the now, you will soon see who is tight, loose, passive, aggressive and calling to often.
Another important indicator is the amount they bet with various holdings, take note what they showdown and bet sizes they made on each street.
Players tend to repeat behavior.