Table 7: Calibration and validation performance statistics of HyMap image spectra.

ParameterClay
Model nameNumber of samples
(cal/val)
PreprocessingNumber of LVSDcalSDval SECSD/SECSEPRPD

HyMap_2004_Clay20Absorption344.720.8023.392.07
HyMap_2005_Clay38/29First derivative of absorption347.1850.490.8520.342.4619.412.70
HyMap_2008_Clay11Absorption342.360.9215.992.86

ParameterOrganic carbon
Model nameNumber of samples
(cal/val)
PreprocessingNumber of LVSDcalSDval SECSD/SECSEPRPD

HyMap_2004_OC20First derivative of absorption32.700.622.131.48
HyMap_2005_OC38/29First derivative of absorption22.582.200.711.641.802.071.80
HyMap_2008_OC11First derivative of absorption51.200.451.610.91

SD: standard deviation of estimated parameter values in (g kg−1), : coefficient of determination, SEC: standard error of calibration in (g kg−1), SEP: standard error of validation in (g kg−1), RPD: ratio of performance to deviation.