7 lines (6 with data), 251 Bytes

f053a 0 128 0 9:15:00 13/09/1987
# Start time=09:15
# First beat=09:18:29.265
# <age-range>: 60-64, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.531,  <RR-high-limit(sec)>: 1.187
# Note: recording with a timing signal, flutter-compensated