7 lines (6 with data), 248 Bytes

m096a 0 128 0 10:00:00 21/04/1991
# Start time=10:00
# First beat=10:17:10.156
# <age-range>: 75-79, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.554,  <RR-high-limit(sec)>: 1.109
# Note: reel-to-reel recording, not flutter-compensated