Average concentrations of elements in Howard County, Iowa

    Counties page > Al in Conterminous US > Al in upper-midwestern US > Averages in Howard County (Calculated from cells in the geochemical grid plotting in this area.)
Element Symbol Mean Std. dev. Minimum Maximum
AluminumAl (wt%)5.6500.1785.2966.198
ArsenicAs (ppm)7.8620.6296.4849.231
CalciumCa (wt%)0.7550.0850.5201.034
CopperCu (ppm)16.8282.27911.65025.566
IronFe (wt%)2.7880.2332.3263.634
MercuryHg (ppm)0.0320.0040.0230.057
MagnesiumMg (wt%)0.4980.0310.3980.614
ManganeseMn (ppm)518.39365.868379.581707.520
SodiumNa (wt%)0.7190.0560.5520.863
PhosphorusP (wt%)0.0590.0080.0390.088
LeadPb (ppm)15.0971.15813.33618.560
SeleniumSe (ppm)0.4640.1130.1390.673
TitaniumTi (wt%)0.3090.0100.2770.354
ZincZn (ppm)60.2744.75050.04671.911

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