7 lines (6 with data), 258 Bytes

f158b 0 128 0 14:15:00 13/12/1987
# Start time=14:15
# First beat=14:15:00.898
# <age-range>: 50-54, <sex>: Male, <medication>: Flecainide
# <RR-low-limit(sec)>: 0.507,  <RR-high-limit(sec)>: 1.398
# Note: recording with a timing signal, flutter-compensated