7 lines (6 with data), 257 Bytes

m169b 0 128 0 13:20:00 04/05/1990
# Start time=13:20
# First beat=13:21:59.742
# <age-range>: 45-49, <sex>: Male, <medication>: Moricizine
# <RR-low-limit(sec)>: 0.578,  <RR-high-limit(sec)>: 1.32
# Note: recording with a timing signal, flutter-compensated