Figure 4. 24-h rhythms are enriched in the light- and temperature-entrained datasets.

QQ plots of Fourier scores at four different periods (12, 18, 24, and 36 h) are shown from LD-entrained (A) and temperature-entrained (B) datasets subdivided into categories as indicated in Figures 2 and 3. The Fourier scores of each transcript (with log₂-transformed expression value >10) are graphed against the randomly permuted 95^th quantile Fourier scores. Enrichment of the experimental period is shown as an upward departure from the diagonal (red line), while depletion is shown as a downward departure.