7 lines (6 with data), 254 Bytes

m036b 0 128 0 14:00:00 16/03/1991
# Start time=14:00
# First beat=14:09:46.960
# <age-range>: 70-74, <sex>: Male, <medication>: Moricizine
# <RR-low-limit(sec)>: 0.414,  <RR-high-limit(sec)>: 0.656
# Note: reel-to-reel recording, not flutter-compensated