7 lines (6 with data), 248 Bytes

f175a 0 128 0 14:25:00 26/06/1988
# Start time=14:25
# First beat=15:15:47.945
# <age-range>: 45-49, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.468,  <RR-high-limit(sec)>: 1.085
# Note: reel-to-reel recording, not flutter-compensated