7 lines (6 with data), 248 Bytes

f228a 0 128 0 14:50:00 02/01/1988
# Start time=14:50
# First beat=14:59:46.289
# <age-range>: 60-64, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.515,  <RR-high-limit(sec)>: 0.921
# Note: reel-to-reel recording, not flutter-compensated