KGE                     Kling-Gupta Efficiency
NSE                     Nash-Sutcliffe Efficiency
RE                      Reduction of Error
back_trans              Back-transformation
calculate_metrics       Reconstruction metrics
colScale                Scale columns of a matrix
colUnscale              Unscale columns of a matrix
cv_mb                   Cross-validation
lsq_mb                  Least square with mass balance penalty
make_Z                  Make cross-validation folds.
mb_fit                  Fit parameters with mass balance criterion
mb_reconstruction       Mass-balance-adjusted reconstruction
nRMSE                   Normalized root-mean-square error
obj_fun                 Objective function from parameters
p1Seasonal              Seasonal streamflow at P.1 station
pc3seasons              Principal components of tree rings
prepend_ones            Prepend a column of ones
rowScale                Scale rows of a Matrix
rowUnscale              Unscale rows of a matrix
