7 lines (6 with data), 247 Bytes

f224a 0 128 0 13:58:00 28/11/1988
# Start time=13:58
# First beat=15:08:11.054
# <age-range>: 65-69, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.515,  <RR-high-limit(sec)>: 1.07
# Note: reel-to-reel recording, not flutter-compensated