7 lines (6 with data), 250 Bytes

e122a 0 128 0 13:30:00 29/07/1988
# Start time=13:30
# First beat=14:01:35.226
# <age-range>: 65-69, <sex>: Female, <medication>: None
# <RR-low-limit(sec)>: 0.695,  <RR-high-limit(sec)>: 1.187
# Note: reel-to-reel recording, not flutter-compensated