7 lines (6 with data), 248 Bytes

e215a 0 128 0 12:35:00 22/08/1988
# Start time=12:35
# First beat=12:42:02.679
# <age-range>: 50-54, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.468,  <RR-high-limit(sec)>: 0.671
# Note: reel-to-reel recording, not flutter-compensated