7 lines (6 with data), 252 Bytes

f189a 0 128 0 11:45:00 21/01/1989
# Start time=11:45
# First beat=11:45:54.578
# <age-range>: 45-49, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.554,  <RR-high-limit(sec)>: 1.132
# Note: recording with a timing signal, flutter-compensated