7 lines (6 with data), 247 Bytes

e139a 0 128 0 8:45:00 13/09/1987
# Start time=08:45
# First beat=09:08:52.664
# <age-range>: 55-59, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.632,  <RR-high-limit(sec)>: 1.296
# Note: reel-to-reel recording, not flutter-compensated