7 lines (6 with data), 254 Bytes

m119a 0 128 0 10:21:00 23/02/1988
# Start time=10:21
# First beat=10:26:27.164
# <age-range>: 60-64, <sex>: Female, <medication>: None
# <RR-low-limit(sec)>: 0.492,  <RR-high-limit(sec)>: 1.109
# Note: recording with a timing signal, flutter-compensated