Element Years Theoretical model Nugget (C0 ) Still (C0 +C) [C0 / (C0 +C)] Range/m RSS R2
Cd 2008 Exponential 0.00181 0.00363 0.501 21200 8.405E-07 0.643
2017 Exponential 0.0009 0.0138 0.935 5700 2.837E-06 0.922
Pb 2008 Gaussian 0.02505 0.0547 0.542 32900 3.789E-04 0.724
2017 Spherical 0.0481 0.1482 0.675 7400 2.618E-04 0.716
As 2008 Exponential 0.1082 0.2714 0.601 135000 1.419E-03 0.754
2017 Exponential 0.22 0.582 0.662 105000 1.136E-03 0.952
Cd 2008 Gaussian 0.0814 0.2948 0.724 56900 4.216E-03 0.845
2017 Spherical 0.242 2.234 0.892 61400 0.036 0.990
Hg 2008 Spherical 0.82 1.641 0.50 41200 0.158 0.783
2017 Gaussian 0.00451 0.001342 0.664 53900 4.33E-06 0.920