7 lines (6 with data), 252 Bytes

m064b 0 128 0 13:00:00 22/02/1990
# Start time=13:00
# First beat=13:16:14.242
# <age-range>: 65-69, <sex>: Male, <medication>: Moricizine
# <RR-low-limit(sec)>: 0.5,  <RR-high-limit(sec)>: 1.015
# Note: reel-to-reel recording, not flutter-compensated