7 lines (6 with data), 254 Bytes

m240b 0 128 0 13:48:00 19/09/1990
# Start time=13:48
# First beat=13:48:51.070
# <age-range>: 50-54, <sex>: Male, <medication>: Moricizine
# <RR-low-limit(sec)>: 0.476,  <RR-high-limit(sec)>: 1.156
# Note: reel-to-reel recording, not flutter-compensated