Validation results for the index, [1 - (R
)], calculated using R
(A) and R
(B) spectra from independent datasets. The coefficients between the predicted and actual measured chlorophyll contents were r2 = 0.94 (A) and 0.93 (B). The solid line represents the equation Chl
, and the dotted lines represent the root mean square error of the chlorophyll prediction.