7 lines (6 with data), 248 Bytes

m016a 0 128 0 10:40:00 03/04/1989
# Start time=10:40
# First beat=10:40:23.476
# <age-range>: 65-69, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.531,  <RR-high-limit(sec)>: 1.109
# Note: reel-to-reel recording, not flutter-compensated