7 lines (6 with data), 247 Bytes

f031a 0 128 0 10:15:00 11/04/1988
# Start time=10:15
# First beat=10:29:41.093
# <age-range>: 60-64, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.57,  <RR-high-limit(sec)>: 0.984
# Note: reel-to-reel recording, not flutter-compensated