7 lines (6 with data), 258 Bytes

m061b 0 128 0 15:35:00 05/06/1991
# Start time=15:35
# First beat=15:44:43.382
# <age-range>: 55-59, <sex>: Male, <medication>: Moricizine
# <RR-low-limit(sec)>: 0.546,  <RR-high-limit(sec)>: 1.164
# Note: recording with a timing signal, flutter-compensated