# ltchist.XXXXXX format
#
# column 1: time difference [nsec]
# column 2: TrueTime 1PPS pulse vs. LTC 50MHz osc. (5-min avg.)
# column 3: Motorola 1PPS pulse vs. LTC 50MHz osc. (5-min avg.)
# column 4: TrueTime 1PPS pulse vs. Motorola 1PPS pulse
# column 5: TrueTime {TRG-1PPS} time vs. TTET time of TRG pulse
# column 6: Motorola {TRG-1PPS} time vs. TTET time of TRG pulse
# column 7: TrueTime {TRG-1PPS} time vs. Motorola {TRG-1PPS} time
#
# note: columns 2-7 should stay within -200...+200 nsec with peak at 0 nsec
#       and >99% within -100...+100 nsec
#       If coulumns 5-7 are empty (all 0) then it means there were no
#       spill trigger events during the observation period.