Some questions about ORION's latency

1. About latency, from the csv file generated by orion, we can see the latency of every data point not larger than10ms.

Why in the summary we got this (Small=30 and Large=1):

Latency: # of IOs (read) # of IOs (write)

        8192 - 16384 us: 10914 26

    16384 - 32768 us: 81 24

    32768 - 65536 us: 9 10

    65536 - 131072 us: 1 6

2. The total IO count of data point(Small=30 and Large=1) in the summary is inconsistent with the trace file, why?

3. In the trace file,  why the max latency of every data point are very large?

ran (small): my  30 oth   0 iops 7953 lat 3004 us, bw =  62.14 MBps dur  59.99 s size 8 K, min lat 125 us, max lat 236822 us READ