7 lines (6 with data), 249 Bytes

f146a 0 128 0 9:30:00 13/09/1988
# Start time=09:30
# First beat=09:30:00.671
# <age-range>: 60-64, <sex>: Female, <medication>: None
# <RR-low-limit(sec)>: 0.585,  <RR-high-limit(sec)>: 1.039
# Note: reel-to-reel recording, not flutter-compensated