7 lines (6 with data), 248 Bytes

e173a 0 128 0 15:30:00 22/01/1989
# Start time=15:30
# First beat=15:39:23.625
# <age-range>: 55-59, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.539,  <RR-high-limit(sec)>: 1.257
# Note: reel-to-reel recording, not flutter-compensated