7 lines (6 with data), 247 Bytes

f196a 0 128 0 9:40:00 12/09/1988
# Start time=09:40
# First beat=09:58:30.171
# <age-range>: 50-54, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.585,  <RR-high-limit(sec)>: 1.132
# Note: reel-to-reel recording, not flutter-compensated