7 lines (6 with data), 248 Bytes

f197a 0 128 0 15:00:00 25/02/1988
# Start time=15:00
# First beat=15:18:26.890
# <age-range>: 40-44, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.617,  <RR-high-limit(sec)>: 1.281
# Note: reel-to-reel recording, not flutter-compensated