7 lines (6 with data), 250 Bytes

e077a 0 128 0 10:40:00 03/12/1987
# Start time=10:40
# First beat=10:58:35.015
# <age-range>: 65-69, <sex>: Female, <medication>: None
# <RR-low-limit(sec)>: 0.437,  <RR-high-limit(sec)>: 0.695
# Note: reel-to-reel recording, not flutter-compensated