It is significant to note the amount of time between the time of the arrest and the time of the first breath test, making it highly unlikely that the 20 minute observation deprivation period was properly performed. The lack of a properly performed 20 minute observation deprivation period by the operator of the breathalyzer machine would invalidate the test, according to the instruction manual and the medical literature (State vs. Downey, 237 N.J. Super 4 (1989) 566 A.2d 822).