7 lines (6 with data), 247 Bytes

e209a 0 128 0 9:45:00 18/01/1989
# Start time=09:45
# First beat=09:53:46.023
# <age-range>: 60-64, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.492,  <RR-high-limit(sec)>: 1.039
# Note: reel-to-reel recording, not flutter-compensated