Figure 5 in Temperature variation and the presence of troglobionts in terrestrial shallow subterranean habitats

Figure 5. Top panel, temperature profiles at hourly intervals for an MSS (dark grey line), epikarst (black line) and cave (grey line) site in the doline where the entrance of Jama v Kovačiji is located. Upper centre panel, spectral densities (y-axis) for different cycle periods (x-axis) for cycles up to 100 days for the MSS site. Note the strong 24 hour period. Lower centre panel, spectral densities (y-axis) for different cycle periods (x-axis) for cycles up to 100 days for the epikarst site. Note the weak 24 hour period. Lower panel, spectral densities (y-axis) for different cycle periods (x-axis) for cycles up to 100 days for the cave site. Note the weak 24 hour period.