I agree we closed at .48...those trades with the "t" were just housekeeping for trades missed duing the day that were reported late. That "u" trade could have been housekeeping also but normally those are "t' trades, that one could have been a late hours trade between MM's to "balance their books".
In any case the opening on Monday shoudl start with a bid and ask that mirrors the bid and ask of the close yesterday. Hopefully maybe even pop a little hgher with some expectations on the buyers coming in that even .48+ is a good buy.