7 lines (6 with data), 260 Bytes

m105b 0 128 0 14:15:00 03/05/1989
# Start time=14:15
# First beat=14:18:27.906
# <age-range>: 60-64, <sex>: Female, <medication>: Moricizine
# <RR-low-limit(sec)>: 0.664,  <RR-high-limit(sec)>: 1.203
# Note: recording with a timing signal, flutter-compensated