7 lines (6 with data), 257 Bytes

m118b 0 128 0 9:23:00 15/06/1990
# Start time=09:23
# First beat=09:28:23.328
# <age-range>: 60-64, <sex>: Male, <medication>: Moricizine
# <RR-low-limit(sec)>: 0.429,  <RR-high-limit(sec)>: 0.898
# Note: recording with a timing signal, flutter-compensated