7 lines (6 with data), 258 Bytes

f135b 0 128 0 10:30:00 27/05/1988
# Start time=10:30
# First beat=10:33:16.539
# <age-range>: 60-64, <sex>: Male, <medication>: Flecainide
# <RR-low-limit(sec)>: 0.726,  <RR-high-limit(sec)>: 1.148
# Note: recording with a timing signal, flutter-compensated