7 lines (6 with data), 248 Bytes

f051a 0 128 0 16:40:00 04/11/1988
# Start time=16:40
# First beat=17:22:54.507
# <age-range>: 40-44, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.531,  <RR-high-limit(sec)>: 1.078
# Note: reel-to-reel recording, not flutter-compensated