7 lines (6 with data), 254 Bytes

m008b 0 128 0 14:00:00 12/01/1991
# Start time=14:00
# First beat=14:00:59.578
# <age-range>: 60-64, <sex>: Male, <medication>: Moricizine
# <RR-low-limit(sec)>: 0.687,  <RR-high-limit(sec)>: 1.531
# Note: reel-to-reel recording, not flutter-compensated