7 lines (6 with data), 248 Bytes

f161a 0 128 0 12:55:00 23/07/1988
# Start time=12:55
# First beat=13:17:50.617
# <age-range>: 65-69, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.523,  <RR-high-limit(sec)>: 0.968
# Note: reel-to-reel recording, not flutter-compensated