7 lines (6 with data), 248 Bytes

f134a 0 128 0 12:49:00 13/09/1988
# Start time=12:49
# First beat=12:50:02.671
# <age-range>: 65-69, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.773,  <RR-high-limit(sec)>: 1.703
# Note: reel-to-reel recording, not flutter-compensated