TABLE III.

Validation of Retrievals at 13 Core Validation Sites Performed Over the 2.5-Month Period in 2015. R Refers to Pearson Correlation. (*) In Walnut Gulch, the Temporal Variation in In Situ Soil Moisture Is Very Small, Leading to the Negative or No Correlation

(m3/m3)	ubRMSE	Bias	RMSE	R
Cropland
St. Josephs1	0.051	−0.044	0.068	0.50
Kenaston1	0.104	−0.025	0.107	0.40
Kenaston2	0.087	−0.037	0.094	0.27
Monte Buey1	0.08	−0.016	0.082	0.59
Valencia1	0.032	0.026	0.041	0.42
Yanco1	0.049	−0.02	0.053	0.83
Crop Average	0.067	−0.019	0.074	0.50
Grassland
Walnut Gylch1	0.014	0.024	0.028	−0.47*
TxSON1	0.047	−0.038	0.060	0.80
TxSON2	0.053	−0.029	0.060	0.72
Tanco2	0.058	−0.013	0.059	0.75
Tanco3	0.040	−0.017	0.069	0.81
Tanco4	0.063	−0.008	0.063	0.52
Shrubland
Walnut Gulch2	0.017	−0.013	0.022	0.08*
Woody Savanna
Tonzi2	0.030	0.002	0.030	0.853
Non–crop Average	0.040	−0.012	0.054	0.51
All Site Average	0.052	−0.015	0.062	0.50