7 lines (6 with data), 252 Bytes

m063b 0 128 0 9:17:00 12/03/1990
# Start time=09:17
# First beat=09:19:36.492
# <age-range>: 35-39, <sex>: Male, <medication>: Moricizine
# <RR-low-limit(sec)>: 0.57,  <RR-high-limit(sec)>: 1.218
# Note: reel-to-reel recording, not flutter-compensated