7 lines (6 with data), 257 Bytes

m201b 0 128 0 9:45:00 03/02/1990
# Start time=09:45
# First beat=09:45:00.367
# <age-range>: 45-49, <sex>: Male, <medication>: Moricizine
# <RR-low-limit(sec)>: 0.375,  <RR-high-limit(sec)>: 0.984
# Note: recording with a timing signal, flutter-compensated