2 Masses
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2.1 meff Z
M_{Z_0} = 0.2844(59) \chi^2/dof= 0.65873
M_{Z_0} = 0.33144(96) \chi^2/dof= 2.127
M_{Z_0} = 0.3317(10) \chi^2/dof= 2.461
M_{Z_0} = 0.2744(34) \chi^2/dof= 1.3699
M_{Z_0} = 0.2450(39) \chi^2/dof= 1.4433
M_{Z_0} = 0.2085(27) \chi^2/dof= 0.92403
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