# Table 4.2 from Davis (2002) # distance(m) vs magnesium (ppm) 0 6.44 1820 8.61 2542 5.24 2889 5.73 3460 3.81 4586 4.05 6020 2.95 6841 2.57 7232 3.37 10903 3.84 11098 2.86 11922 1.22 12530 1.09 14065 2.36 14937 2.24 16244 2.05 17632 2.23 19002 0.42 20860 0.87 22471 1.26