7 lines (6 with data), 254 Bytes

m175b 0 128 0 13:08:00 28/03/1990
# Start time=13:08
# First beat=13:09:23.070
# <age-range>: 55-59, <sex>: Male, <medication>: Moricizine
# <RR-low-limit(sec)>: 0.609,  <RR-high-limit(sec)>: 1.257
# Note: reel-to-reel recording, not flutter-compensated