A string contain IP Packet Size Distribution statistics.
Distribution grouping are following :1-32 64 96 128
160 192 224 256 288 320 352 384 416 448 480 512
544 576 1024 1536 2048 2560 3072 3584 4096 4608. Value for
each group will be expressed in 2 bytes (in Network byte
order) and need to divide by 1000 to get the exact value
given by CLI using show ip cache flow command.