The total systematic uncertainty to the top mass is derived by adding in quadrature the partial errors. Table 1 summarizes the systematic uncertainties as well as the symmetrized (i.e ±(|negative|+positive)/2).

TABLE 1: Partial and total systematic uncertainty on the top mass. The second column lists the asymmetric errors and the third column the symmetrized ones, taken as the average of the asymmetric counterparts.

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