7 lines (6 with data), 247 Bytes

f129a 0 128 0 9:30:00 22/07/1987
# Start time=09:30
# First beat=09:37:39.976
# <age-range>: 70-74, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.554,  <RR-high-limit(sec)>: 1.312
# Note: reel-to-reel recording, not flutter-compensated