6 4,2 "Interface,m-msl",-999.99 "Lithology",-999.99 "Grain-size-distr. class NEN5104",-999.99 "Admixture",-999.99 2.90,C,None,"Sandy" 2.60,C,None,"Moderate Silty" 2.40,C,None,"Moderate Silty" 1.60,C,None,"Weak Sandy" 1.40,S,CSFO,"Silty" 0.60,-,-,-