7 lines (6 with data), 260 Bytes

f203b 0 128 0 12:15:00 04/03/1989
# Start time=12:15
# First beat=12:15:00.156
# <age-range>: 45-49, <sex>: Female, <medication>: Flecainide
# <RR-low-limit(sec)>: 0.484,  <RR-high-limit(sec)>: 1.101
# Note: recording with a timing signal, flutter-compensated