7 lines (6 with data), 247 Bytes

e235a 0 128 0 9:45:00 16/06/1988
# Start time=09:45
# First beat=10:35:41.960
# <age-range>: 65-69, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.515,  <RR-high-limit(sec)>: 0.804
# Note: reel-to-reel recording, not flutter-compensated