Reeltime Rentals Inc (RLTR)

[Smooth]

Can anyone explain to me why the sales noted below have equal numbers of shares/blocks trading at the same time with about a half cent difference?
Price Size Exch Time
0.065 5000 OTO 12:11:50
0.06 5000 OTO 12:11:50

0.065 20000 OTO 11:15:17
0.06 20000 OTO 11:15:17

0.06 6000 OTO 10:46:05
0.065 6000 OTO 10:46:05

0.06 5300 OTO 10:46:05
0.065 5300 OTO 10:46:05

0.06 100 OTO 10:40:43
0.065 5100 OTO 10:40:43
0.06 5000 OTO 10:40:42
Is this something the MMs are doing? Does that mean that the "real" volume is only 50% of the total volume above of 82,800 shares traded above?

Thanks for any feedback and clarifications.