7 lines (6 with data), 258 Bytes

m049b 0 128 0 10:22:00 08/08/1990
# Start time=10:22
# First beat=10:30:21.218
# <age-range>: 65-69, <sex>: Male, <medication>: Moricizine
# <RR-low-limit(sec)>: 0.664,  <RR-high-limit(sec)>: 1.065
# Note: recording with a timing signal, flutter-compensated