7 lines (6 with data), 248 Bytes

f169a 0 128 0 10:30:00 13/07/1988
# Start time=10:30
# First beat=10:30:00.390
# <age-range>: 50-54, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.484,  <RR-high-limit(sec)>: 0.781
# Note: reel-to-reel recording, not flutter-compensated