7 lines (6 with data), 252 Bytes

m024b 0 128 0 12:00:00 24/11/1990
# Start time=12:00
# First beat=12:04:50.789
# <age-range>: 45-49, <sex>: Male, <medication>: Moricizine
# <RR-low-limit(sec)>: 0.5,  <RR-high-limit(sec)>: 1.125
# Note: reel-to-reel recording, not flutter-compensated