7 lines (6 with data), 248 Bytes

e129a 0 128 0 10:45:00 11/12/1987
# Start time=10:45
# First beat=11:16:52.406
# <age-range>: 75-79, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.671,  <RR-high-limit(sec)>: 1.398
# Note: reel-to-reel recording, not flutter-compensated