7 lines (6 with data), 247 Bytes

e217a 0 128 0 14:30:00 22/01/1988
# Start time=14:30
# First beat=14:50:37.125
# <age-range>: 50-54, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.64,  <RR-high-limit(sec)>: 0.984
# Note: reel-to-reel recording, not flutter-compensated