A handheld TDR soil moisture meter was used to map soil moisture in the area of the CRN detectors at the three field site locations. The measurements were made over the top 20 cm of the soil profile and each map consists of 121-163 measurement points collected within an area of 300-500 meters. Soil moisture was mapped 6-8 times at the three field sites in the period March to August 2016. Here, we provide the area average of the measurement points collected for each map.

Equipment: A handheld TDR (Fieldscout TDR 300 Soil Moisture Meter, Spectrum Technologies, Inc.) with 20 cm long prongs.0-20 cm measurement depth. The soil moisture is an average of 121-163 measurement points.