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. 2021 May 14;193(Suppl 1):272. doi: 10.1007/s10661-020-08811-3

Table 2.

Flux bias statistics for the linear, LOESS, and WRTDS model estimates

Constituent Linear LOESS WRDTS
Ca 0.03 0.02 0.01
Mg −0.02 −0.04 0.01
Na −0.17 −0.09 −0.01
K −0.08 −0.03 0.04
SO4 −0.17 −0.09 0.01
Cl −0.11 −0.09 −0.02
HCO3 0.00 −0.02 0.03
NO3 −0.17 −0.19 0.13