7 lines (6 with data), 247 Bytes

e186a 0 128 0 11:00:00 01/04/1988
# Start time=11:00
# First beat=11:00:00.304
# <age-range>: 35-39, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.57,  <RR-high-limit(sec)>: 0.984
# Note: reel-to-reel recording, not flutter-compensated