Figure 2.

Frequency distribution (bars) and cumulative frequency (solid line) of half-hourly volumetric soil water contents (SWC; 0.05 m depth) during the 2001-2009 study period. The dotted vertical lines refer to the SWC at field capacity (0.48 m³ m⁻³) and the wilting point (0.02 m³ m⁻³). SWC measurements during periods of soil frost may be unreliable due to frozen water and are thus not included. Note that the values on the x-axis are in descending order.