7 lines (6 with data), 259 Bytes

f104b 0 128 0 14:35:00 24/05/1988
# Start time=14:35
# First beat=14:37:44.742
# <age-range>: 65-69, <sex>: Female, <medication>: Flecainide
# <RR-low-limit(sec)>: 0.742,  <RR-high-limit(sec)>: 1.32
# Note: recording with a timing signal, flutter-compensated