Depth (cm),WST_1A,WST_2A,WST_1B,WST_2B,WST_3A,WST_3B 2,0.51,2.87,0.70,1.95,0.86,1.35 5,0.19,4.00,0.84,1.65,1.01,0.72 10,0.33,4.41,3.52,0.52,1.26,0.80 15,0.22,1.97,2.35,4.51,0.20,0.35 20,0.27,1.20,1.47,0.60,0.87,1.27 ,,,,,, Note- all data is % SiO2 by dry wt,,,,,,