7 lines (6 with data), 249 Bytes

f122a 0 128 0 15:00:00 19/06/1987
# Start time=15:00
# First beat=15:11:09.664
# <age-range>: 50-54, <sex>: Female, <medication>: None
# <RR-low-limit(sec)>: 0.484,  <RR-high-limit(sec)>: 1.21
# Note: reel-to-reel recording, not flutter-compensated