Table 8: Mean deviation (RMSE) of predicted clay and organic carbon contents in the overlap area of the HyMap flight strips and standard errors of PLSR models generated using the spectra transformed to absorbance (Abs) and spectra transformed to first derivative of absorbance (Abs_Deriv1). Bold numbers indicate model parameters presented in Table 7.

Day of acquisition

Number of pixels estimated

Clay

Organic carbon

RMSE_{overlap}

SEP* or SEC**

RMSE_{overlap}

SEP* or SEC**

Abs

Abs_Deriv1

Abs

Abs_Deriv1

Abs

Abs_Deriv1

Abs

Abs_Deriv1

August 9, 2004

36015

69.63

38.99

28.35**

3.86

2.20

2.35**

May 27, 2005

260206

22.46

17.03

20.96*

2.34

0.60

3.13*

July 29, 2008

60308

12.95

15.39

22.89**

2.21

0.79

1.88**

SEC: standard error of calibration in (g kg^{−1}) and SEP: standard error of validation in (g kg^{−1}).