7 lines (6 with data), 252 Bytes

m163b 0 128 0 14:20:00 13/01/1991
# Start time=14:20
# First beat=14:28:15.671
# <age-range>: 75-79, <sex>: Male, <medication>: Moricizine
# <RR-low-limit(sec)>: 0.5,  <RR-high-limit(sec)>: 0.992
# Note: reel-to-reel recording, not flutter-compensated