7 lines (6 with data), 248 Bytes

e281a 0 128 0 13:25:00 17/05/1988
# Start time=13:25
# First beat=13:34:17.171
# <age-range>: 65-69, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.578,  <RR-high-limit(sec)>: 0.984
# Note: reel-to-reel recording, not flutter-compensated