7 lines (6 with data), 248 Bytes

e126a 0 128 0 13:30:00 18/08/1988
# Start time=13:30
# First beat=13:52:10.773
# <age-range>: 60-64, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.742,  <RR-high-limit(sec)>: 1.312
# Note: reel-to-reel recording, not flutter-compensated