ERS:       Kinetic energy measured by Range Stack, in MeV unit
RRS:       Range measured by Range Stack, in cm unit
LAYV4:     The stopping layer in Range Stack
SECV4:     The Stopping sector in Range Stack
ZF:        The stopping Z position from the UTC track extrapolation, in
           cm unit
ELAST:     The stopping counter energy, in MeV unit
ELAST_COR: The stopping counter energy corrected with the muon energy, 
           in MeV unit
TDOT2T:    The t.2 time, in ns unit