ID	Sample ID in form "Reach-Bank-Location". So "1A-RB-Toe" is in reach 1A, right bank, at the toe.
TP	Total phosphorus (mg/kg)
M3P	Mehlich-3 phosphorus (mg/kg)
WEP	Water extractable phosphorus (mg/kg)
Sand	% sand of bank soil
Silt	% silt of bank soil
Clay 	% clay of bank soil
Lat	Latitude
Lon	Longitude