Region,Conc
P.unmined,4.421573508
P.unmined,5.691774511
P.unmined,4.143940085
P.unmined,3.543085328
P.unmined,3.999246377
P.unmined,3.235874182
P.mined,5.761871567
P.mined,16.10248146
P.mined,7.014959337
P.mined,5.11956873
Control,3.364328738
Control,3.113580928
Control,2.203229661
Control,1.912568353
Control,2.531808717