7 lines (6 with data), 248 Bytes

f155a 0 128 0 11:00:00 04/06/1988
# Start time=11:00
# First beat=11:06:56.921
# <age-range>: 65-69, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.726,  <RR-high-limit(sec)>: 1.242
# Note: reel-to-reel recording, not flutter-compensated