7 lines (6 with data), 248 Bytes

e261a 0 128 0 10:18:00 16/12/1988
# Start time=10:18
# First beat=10:19:27.765
# <age-range>: 75-79, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.562,  <RR-high-limit(sec)>: 1.421
# Note: reel-to-reel recording, not flutter-compensated