7 lines (6 with data), 258 Bytes

m200b 0 128 0 10:00:00 01/06/1989
# Start time=10:00
# First beat=10:10:31.718
# <age-range>: 55-59, <sex>: Male, <medication>: Moricizine
# <RR-low-limit(sec)>: 0.523,  <RR-high-limit(sec)>: 1.343
# Note: recording with a timing signal, flutter-compensated