ccc                     Concordance Correlation Coefficient
d                       Index of Agreement
d_r                     Refined Index of Agreement
evs                     Explained Variance Score
gof                     Registry-Driven Goodness-of-Fit Summary
gof_compare             Multi-Dataset Goodness-of-Fit Comparison
kge_2009                Kling-Gupta Efficiency (2009)
kge_2012                Kling-Gupta Efficiency (2012)
mae                     Mean Absolute Error
mape                    Mean Absolute Percentage Error
max_error               Maximum Absolute Error
me                      Mean Error
medae                   Median Absolute Error
mse                     Mean Squared Error
msle                    Mean Squared Logarithmic Error
nrmse                   Normalized Root Mean Squared Error
nse                     Nash-Sutcliffe Efficiency
pbias                   Percent Bias
r                       Pearson Correlation Coefficient
r_squared               Coefficient of Determination
rae                     Relative Absolute Error
rho                     Spearman Rank Correlation Coefficient
rmse                    Root Mean Squared Error
rmsle                   Root Mean Squared Logarithmic Error
rrse                    Root Relative Squared Error
rsd                     Relative Standard Deviation
rsr                     RMSE-Standard Deviation Ratio
sae                     Sum of Absolute Errors
smape                   Symmetric Mean Absolute Percentage Error
sse                     Sum of Squared Errors
ubrmse                  Unbiased Root Mean Squared Error
ve                      Volumetric Efficiency
wape                    Weighted Absolute Percentage Error
