7 lines (6 with data), 250 Bytes

f015a 0 128 0 10:40:00 06/08/1988
# Start time=10:40
# First beat=10:51:27.046
# <age-range>: 60-64, <sex>: Female, <medication>: None
# <RR-low-limit(sec)>: 0.398,  <RR-high-limit(sec)>: 0.703
# Note: reel-to-reel recording, not flutter-compensated