7 lines (6 with data), 254 Bytes

m033b 0 128 0 15:19:00 03/06/1990
# Start time=15:19
# First beat=15:32:46.757
# <age-range>: 65-69, <sex>: Male, <medication>: Moricizine
# <RR-low-limit(sec)>: 0.507,  <RR-high-limit(sec)>: 0.898
# Note: reel-to-reel recording, not flutter-compensated