7 lines (6 with data), 250 Bytes

f047a 0 128 0 8:09:00 25/05/1988
# Start time=08:09
# First beat=08:12:38.421
# <age-range>: 60-64, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.656,  <RR-high-limit(sec)>: 1.14
# Note: recording with a timing signal, flutter-compensated