7 lines (6 with data), 260 Bytes

f063b 0 128 0 10:23:00 27/12/1987
# Start time=10:23
# First beat=10:24:01.179
# <age-range>: 75-79, <sex>: Female, <medication>: Flecainide
# <RR-low-limit(sec)>: 0.578,  <RR-high-limit(sec)>: 1.164
# Note: recording with a timing signal, flutter-compensated