7 lines (6 with data), 251 Bytes

f090a 0 128 0 8:45:00 25/07/1988
# Start time=08:45
# First beat=08:53:39.828
# <age-range>: 45-49, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.523,  <RR-high-limit(sec)>: 1.257
# Note: recording with a timing signal, flutter-compensated