Fig 4. Our poisson preprocessing method recovers poisson distribution.

a) The experimental signal from neutrophils, where grey dots are the number of counts per 50 ms, the white line is a trend determined by the robust smoothing method, black dots are mean values in segments, and the bars are the variance in segments. b) Detrended (DC component min(t[n] added) and c) the pre-processed signal from neutrophils. On the graphs d) and e) are histograms from the data (gray bars), and the black line is the computed Poisson distribution with the parameter λ estimated from the experimental data.