The INM Inter Arrival Time histogram during 15min interval. An array of 32 octets
(each 4 octets means amount of a bin of histogram), designed for supporting from 0
to 7 bins of the histogram. The index of the particular bin incremented by an complete
impulse noise event is determained from the following INMControl parameters. Each bin
has a value in the range 0x0 to 0xFFFFFFFF.