The IGV display of reads mapping for exponential (L) phase and starvation (S) phases. The “distribution” tracks show the density of mapped reads along the genome, visualized by Integrative Genome Viewer Integration (IGV). The “peaks” tracks show a high mapping frequency of reads to a particular region (examples indicated by asterisks). Red and blue represent the L phase and S phase, respectively. As shown to the right of this figure, the region of the selected PEAK (No. 45 in L, No. 49 in S) is shown as an example (3014–3017 kb). The middle section of the peak illustrates the pileup signal in the top track.