7 lines (6 with data), 248 Bytes

f156a 0 128 0 14:30:00 23/02/1988
# Start time=14:30
# First beat=15:01:58.359
# <age-range>: 60-64, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.656,  <RR-high-limit(sec)>: 1.296
# Note: reel-to-reel recording, not flutter-compensated