Click on image to view larger version.



Fig. 4. Comparison of volumetric water content ({theta}) as determined from dual-probe heat-pulse (DPHP) sensors and by soil sampling for all sites and sampling times. Each circle represents the mean of five DPHP measurements and the mean {theta} from 10 soil samples for a given site and sampling time. The error bars represent one mean standard deviation on either side of the mean water content. The dashed line is the regression model.