7 lines (6 with data), 248 Bytes

e257a 0 128 0 15:46:00 31/12/1988
# Start time=15:46
# First beat=16:02:49.953
# <age-range>: 60-64, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.554,  <RR-high-limit(sec)>: 1.015
# Note: reel-to-reel recording, not flutter-compensated