7 lines (6 with data), 250 Bytes

e105a 0 128 0 18:30:00 20/07/1988
# Start time=18:30
# First beat=18:47:10.125
# <age-range>: 65-69, <sex>: Female, <medication>: None
# <RR-low-limit(sec)>: 0.484,  <RR-high-limit(sec)>: 0.804
# Note: reel-to-reel recording, not flutter-compensated