7 lines (6 with data), 252 Bytes

m201a 0 128 0 11:00:00 31/12/1989
# Start time=11:00
# First beat=11:00:00.593
# <age-range>: 45-49, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.476,  <RR-high-limit(sec)>: 0.843
# Note: recording with a timing signal, flutter-compensated