7 lines (6 with data), 254 Bytes

f121b 0 128 0 12:30:00 20/03/1989
# Start time=12:30
# First beat=12:30:00.601
# <age-range>: 65-69, <sex>: Male, <medication>: Flecainide
# <RR-low-limit(sec)>: 0.609,  <RR-high-limit(sec)>: 1.164
# Note: reel-to-reel recording, not flutter-compensated