7 lines (6 with data), 248 Bytes

e280a 0 128 0 12:05:00 05/02/1988
# Start time=12:05
# First beat=12:19:17.906
# <age-range>: 50-54, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.585,  <RR-high-limit(sec)>: 0.859
# Note: reel-to-reel recording, not flutter-compensated