7 lines (6 with data), 257 Bytes

m206b 0 128 0 11:41:00 22/09/1990
# Start time=11:41
# First beat=11:48:59.664
# <age-range>: 60-64, <sex>: Male, <medication>: Moricizine
# <RR-low-limit(sec)>: 0.57,  <RR-high-limit(sec)>: 1.101
# Note: recording with a timing signal, flutter-compensated