Table 4: Descriptive statistics of the calibration and validation data sets for the prediction of clay and organic carbon content with laboratory and HyMap image spectra.

Calibration data sets
LaboratoryHyMapNumber of samplesClay (g kg−1)Organic carbon (g kg−1)
MeanSDMinMaxMeanSDMinMax

Lab_2004HyMap_200420108.0748.3848.03186.649.603.175.2519.59
Lab_2005HyMap_20053899.1250.0538.45216.189.162.955.0117.48
Lab_2008HyMap_20081197.3145.6852.22197.206.661.474.3110.34

Validation data sets
LaboratoryHyMapNumber of samplesClay (g kg−1)Organic carbon (g kg−1)
MeanSDMinMaxMeanSDMinMax

Lab_2004115130.2267.4536.53329.4710.424.024.3124.79
Lab_2005a97137.8367.5336.53329.4710.744.164.3124.79
Lab_2005bHyMap_20052992.0652.3636.53237.528.893.735.5524.79
Lab_2004124129.5766.2636.53329.4710.623.905.0124.79