T (K),ln(R/A),x_err (K),y_err_lower,y_err_upper,conc (mg/ml)
256.532,-1.286,0.133,0.518,0.340,1.000
253.671,0.926,0.133,0.078,0.072,1.000
252.343,1.650,0.133,0.083,0.077,1.000
253.376,0.549,0.137,0.404,0.287,0.100
251.855,2.656,0.137,0.404,0.287,0.100
250.870,3.530,0.137,0.166,0.142,0.100