7 lines (6 with data), 254 Bytes

m067a 0 128 0 10:05:00 12/06/1990
# Start time=10:05
# First beat=10:13:21.218
# <age-range>: 40-44, <sex>: Female, <medication>: None
# <RR-low-limit(sec)>: 0.468,  <RR-high-limit(sec)>: 0.773
# Note: recording with a timing signal, flutter-compensated