A multitone test signal is created using a 512-point sample set with a sampling frequency of 32 MHz. One hundred tones with an amplitude of 75 mV are used beginning with bin 51 and thereafter except for bins 101, 102, 103, 104, 105, and 106. A DUT was subject to this multitone signal and its output digitized at the same rate of 32 MHz. An FFT analysis reveals that bins 101, 102, 103, 104, 105, and 106 had an RMS level of 1.1, 1.2, 0.81, 1.5, 1.1, and 0.9 mV, respectively. What is the noise power ratio in decibels?