SAMP_TOP,GCHM_CODE,COLOUR m,Oxidisable sulphides (OS %) = TPS -AS,(Author classification) 0.5,0.1,NaN 0.5,-0.07,NaN 0.5,0.18,O 0.5,0.07,NaN 1,0.03,O 1.2,0.04,O 1.2,0.03,O 1.2,0.02,NaN 1.2,0.06,NaN 1.5,0.12,O 1.5,3.2,NaN 1.5,0.02,B 1.5,0.02,NaN 1.5,0.04,B 1.5,-0.17,NaN 1.5,0,NaN 1.5,-0.02,NaN 1.6,0,O 2,2.2,O 2,0.04,O 2,2.66,O 2,1.23,NaN 2,2.15,O 2,1.63,G 2.1,0.99,O 2.2,0.31,O 2.3,0.14,NaN 2.3,-2.48,O 2.5,0.28,B 2.5,0.07,O 2.5,0.06,O 2.5,0.37,B 2.7,2.73,G 3,1.32,NaN 3,0.54,B 3,0.95,G 3,0.05,B 3,-0.96,O 3.2,-4.36,B 3.5,3.98,NaN 3.5,2.49,G 3.5,1.96,G 3.7,0.04,B 4,0.01,B 4.05,3.13,B 4.1,2.23,G 4.2,1.16,G 4.5,6.73,NaN 4.7,2.51,G 4.7,3.15,G 5,8.25,G 5,2.67,NaN 5,3.94,G 5.07,0.95,G 5.1,2.68,G 5.5,2.79,G 5.6,0.28,G 5.74,1.67,G 5.85,2.48,NaN 6,3.32,NaN 6.5,7.11,G 7,1.98,G 7.09,2.23,G 7.5,2.19,G 7.7,3.15,G 7.75,8.88,G 8,1.37,G 8,2.48,G 8.1,2.11,G 8.15,7.64,G 8.5,1.76,G 8.5,4.44,G 8.5,3.45,G 9,2.78,G 9.07,4.08,G 9.1,3.1,G 9.7,1.56,G 10,1.62,G 10.05,6.46,G 10.34,2.1,G 10.82,0.27,G 10.85,3.45,G 11.05,5.22,G 11.15,2.21,G 11.6,1.7,G 11.7,4.73,G 12,1.52,G 12.1,3.84,G 13.17,3.07,G 13.45,2.26,G 13.6,2,G 13.9,2.28,G 14.14,7.04,G 14.2,7.08,G 14.65,0.09,G 15,2.09,G 15,2.62,NaN 15.1,2.81,NaN 16,1.82,G 16.31,2.38,G 16.76,3.76,G 18.1,2.02,G 19.4,1.51,G 19.45,2.18,NaN 19.75,2.53,G 20.5,1.6,G 21.52,5.83,G 21.65,2.88,G 23.6,2.27,NaN 24.48,0.54,NaN 25,2.2,G 1.5,0.08,G 2.95,0.21,NaN 4.95,1.28,B 7,1.5,G 10.5,1.05,G 17.25,1.69,G 23.92,2.95,G 27.45,5.71,G 33.45,0.77,G