7 lines (6 with data), 248 Bytes

e120a 0 128 0 13:45:00 30/07/1988
# Start time=13:45
# First beat=14:08:33.109
# <age-range>: 50-54, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.554,  <RR-high-limit(sec)>: 1.367
# Note: reel-to-reel recording, not flutter-compensated