According to my IRESS data, 0.625 -> 0.620 -> 0.615 happens in...

According to my IRESS data, 0.625 -> 0.620 -> 0.615 happens in one big hit at 3:20:15 pm. So, it could be 1 seller that let the boring factor set in.

3:20:15 PM 0.615 15,975 9,824.625
3:20:15 PM 0.615 46,460 28,572.900
3:20:15 PM 0.620 10,000 6,200.000
3:20:15 PM 0.620 1,500 930.000
3:20:15 PM 0.620 8,060 4,997.200
3:20:15 PM 0.620 7,962 4,936.440
3:20:15 PM 0.625 750 468.750
3:20:15 PM 0.625 8,419 5,261.875

I took notice because I didn't think my order will be filled, and yet it did.